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 [Search a list of Patent Appplications for class 365]   CLASS 365,STATIC INFORMATION STORAGE AND RETRIEVAL
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SECTION I - CLASS DEFINITION

This is the generic class for apparatus or corresponding processes for the static storage and retrieval of information. For classification herein, the storage system must be (1) static, (2) a singular storage element or plural elements of the same type, (3) addressable.

(1) Note. Static storage and retrieval of information within this class means that relative motion is not required between the storage element and the source, receiver, or transducer. For dynamic storage and retrieval or magnetic information, see References to Other Classes, below.
(2) Note. The storage elements within this class are plural elements of the same type which may store one or more bits of information per element.
(3) Note. The storage system must be addressable, that is, there must be an inherent means for writing information into a memory and a means for reading the same information from the memory. For switching systems, selective systems, card readers, and recorders, see References to Other Classes, below. Static memory systems involving data processing techniques are classified elsewhere.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

A. This class includes static memory systems wherein the information stored in the memory element has electrical, magnetic, or optical properties. This class excludes mechanical or fluidic type storage of information, e.g., card files, cams, levels, or fluids, etc. This class also excludes the storage of noninformation, e.g., energy, basic signal control means, etc.

B. Processes for the manufacturing of storage elements are not classified within this class. See appropriate classes in References To Other Classes, below.

C. Storage Signals, per se, are not classified herein. (See appropriate classes in the References To Other Classes, below.)

D. Circuits not specific to storage and retrieval which may constitute subcombinations of such apparatus are classified in the appropriate class for such circuits, e.g., photosensitive devices. See References to Other Classes, below.

E. The combination of the subject matter of this class and an art environment is classified with the art environment.

F. For static storage and retrieval systems, devices, and arrangements found in other classes: see appropriate classes in Reference To Other Classes, below.

G. The organization of this class can be found in Subclass References to the Current Class, below.

SECTION III - SUBCLASS REFERENCES TO THE CURRENT CLASS

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1,through 44, for magnetic bubble devices.
45,48, analog storage systems, for devices where the information stored is not digital in nature.
49.1,through 243.5, digital storage systems, for devices where the information is discrete.
244,for subject matter not found above.

SECTION IV - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

29Metal Working,   for method of assembling storage elements. (See Lines With Other Classes, Section B.)
29Metal Working,   subclass 25.35 for method of making piezoelectric devices, subclass 737 for apparatus to assemble magnetic memory devices, subclasses 25.01+ for making of barrier layer device, subclasses 592.1+ for processes of mechanical manufacturing electrical devices. (See Lines With Other Classes F.)
74Machine Element or Mechanism,   subclasses 568+ for mechanical storage elements. (See Lines Other Classes, F.)
148Metal Treatment,   for metal stock materials usable as storage elements. (See Lines With Other Classes, B.)
156Adhesive Bonding and Miscellaneous Chemical Manufacture,   for bonding together storage element materials. (See Lines With Other Classes, B.)
174Electricity: Conductors and Insulators,   subclasses 250+ for printed circuit elements which are storage panels. (See Lines With Other Classes, F .)
178Telegraphy,   subclass 112 for static information stored in the form of a perforated tape. (See Lines With Other Classes, F.)
194Check-Actuated Control Mechanisms,   mechanical storage of a check. (See Lines With Other Classes, F.)
205Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,   subclass 68 for process of record matrix forming. (See Lines With Other Classes, F.)
209Classifying, Separating, and Assorting Solids,   subclasses 212+ for separating components by magnetic repulsion wherein a magnetic pin position may be indicative of information. (See Lines With Other Classes, F.)
235Registers,   subclasses 435+ for card readers.
235Registers,   subclasses 435+ for coded record sensors, subclass 493 for magnetic records. (See Lines With Other Classes, F.)
250Radiant Energy,   subclass 550 for holographic interference pattern analysis, subclass 553 for a matrix of solid-state light sources. (See Lines With Other Classes, F.)
250Radiant Energy,   for radiant energy. (See Lines With Other Classes, D, above.)
252Compositions,   subclasses 62.51+ for magnetic compositions used as a storage medium. (See Lines With Other Classes, F.)
257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses, including subclasses 225 , 260, 390, 391, 903, 904, and 910 for solid-state static memory or memory element structure, per se. (See Lines With Other Classes, C.)
257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses, including subclasses 225 , 260, 390, 391, 903, 904, and 910 for solid-state static memory or memory element structure. (See Lines With Other Classes, F.)
307Electrical Transmission or Interconnection Systems,   subclasses 401+ for saturable reactor systems which include thin film parametrons, logic circuits, electrets, per se, which are switching type devices, rather than storage of information devices and subclass 109 for systems having a capacitor. (See Lines With Other Classes, F.)
307Electrical Transmission or Interconnection Systems,   subclasses 112+ for switching systems.
310Electrical Generator or Motor Structure,   subclasses 311+ for piezoelectric device, F).
313Electric Lamp and Discharge Devices,   for a cathode-ray tube (CRT) type storage tube. (See Lines With Other Classes, C.)
313Electric Lamp and Discharge Devices,   subclasses 391+ for cathode-ray tube storage devices. (See Lines With Other Classes, F.)
315Electric Lamp and Discharge Devices: Systems,   for a CRT type storing system. (See Lines With Other Classes, C.)
315Electric Lamp and Discharge Devices: Systems,   subclass 8.51 for cathode-ray tube storing systems, subclass 84.51 for discharge device systems which store electrical pulse energy for later retrieval. (See Lines With Other Classes, F.)
320Electricity: Battery or Capacitor Charging or Discharging,   subclasses 166+ for a battery or capacitor charging or discharging circuit. (See Lines With Other Classes, F.)
324Electricity: Measuring and Testing,   subclasses 43+ for magnetic field testing means, subclasses 111+ for storage of voltages and currents; and subclasses 210+ for testing of magnetic memory elements, per se. (See Lines With Other Classes, F.)
326Electronic Digital Logic Circuitry,   appropriate subclasses for digital logic devices. (See Lines With Other Classes, F.)
326Electronic Digital Logic Circuitry,   for logic circuits. (See Lines With Other Classes, D, above.)
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 545+ for miscellaneous bias circuits with signal protection or bias preservation. (See Lines With Other Classes, C.)
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   particularly subclasses 199+ for miscellaneous bistable circuits and subclasses 365+ for miscellaneous gating circuits. (See Lines With Other Classes, F.)
330Amplifiers,   subclasses 4+ for laser type amplifiers having utility in information storage. (See Lines With Other Classes, F.)
330Amplifiers,   for amplifiers. (See Lines With Other Classes, D, above.)
333Wave Transmission Lines and Networks,   subclass 4 for plural channel systems with balanced circuits, subclasses 124+ for impedance matching devices, subclass 12 for transmission lines, subclasses 138+ for delay means, subclass 32 for coupling means which include impedance matching means, subclasses 170+ for wave filters with bridge means, subclasses 213+ for negative resistance networks. (See Lines With Other Classes, F.)
335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclasses 209+ for magnets and electromagnets, per se. (See Lines With Other Classes, F.)
336Inductor Devices,   for an inductor type storage element. (See Lines With Other Classes, C.)
336Inductor Devices,   appropriate subclass for storage element which are inductors. (See Lines With Other Classes, F.)
338Electrical Resistors,   subclass 32 for superconductors, per se, having utility as a storage element. (See Lines With Other Classes, F.)
340Communications: Electrical,   subclasses 1.1 through 16.1for selective systems, particularly subclasses 2.2-2.31 for a channel selecting matrix and subclasses 14.1-14.69 for decoder matrix systems which are used to control a device (see Lines With Other Classes and Within This Class, F in this class (365)); and subclass 146.2 for digital comparator systems.
341Coded Data Generation or Conversion,   appropriate subclasses for code converters (See Lines With Other Classes, D, above).
345Computer Graphics Processing and Selective Visual Display Systems,   subclasses 55+ for display elements arranged in matrix. (See Lines With Other Classes, F.)
346Recorders,   appropriate subclass for recorders. Static memory systems involving data processing techniques are classified elsewhere
346Recorders,   subclasses 2+ for phenomenal apparatus and processes recording for processes of producing a record in conjunction with the reading of a record, subclasses 74.2+ for magnetically forming a visible image record. (See Lines With Other Classes, F.)
347Incremental Printing of Symbolic Information,   subclasses 1+ for processes and apparatus for conveying information by selectively creating on a medium a visibly distinguishable symbol or mark composed of a plurality of portions; subclass 113 for thermoplastic marking. (See Lines With Other Classes, F.)
348Television,   subclasses 714+ for details of static storage device which includes the processing of a video signal.
353Optics: Image Projectors,   subclasses 25+ for selective data retrieval of stored information viewed by a projection means. (See Lines With Other Classes, F.).
358Facsimile and Static Presentation Processing,   subclasses 296 through 304for facsimile recording. (See Lines With Other Classes, F.)
359Optical: Systems and Elements,   subclasses 350+ for infrared and ultraviolet optical elements, subclasses 1+ for holographic records, subclasses 484.01 through 494.01 for polarization devices, and subclasses 290+ for light control by altering an optical medium, surface, or interface (See Lines With Other Classes, F.)
359Optical: Systems and Elements,   for holographic, polarization, and light control type storage elements. (See Lines With Other Classes, C.)
359Optical: Systems and Elements,   for optical elements. (See Lines With Other Classes, D, above.)
360Dynamic Magnetic Information Storage or Retrieval,   subclass 112 for Hall effect; subclasses 114.01-114.1 for reproducing only, using light; and subclasses 313-327.33 and 328 for magnetoresistive, magnetostrictive.
361Electricity: Electrical Systems and Devices,   for capacitor type storage element. (See Lines With Other Classes, C.)
361Electricity: Electrical Systems and Devices,   subclasses 160+ for control circuits for relay devices, subclass 271 for electrostatic capacitors, per se, subclass 600 for housings or mounting assemblies with plural diverse electrical components, subclasses 500+ for electrolytic capacitors, per se. (See Lines With Other Classes, F.)
369Dynamic Information Storage or Retrieval,   for phonograph with a static storage system. (See Lines With Other Classes, E.)
369Dynamic Information Storage or Retrieval,   appropriate subclasses, subclass 100.1 for the dynamic recording of audio information which may include static storage, particularly subclasses 100+ for photographic storage of information. (See Lines With Other Classes, F.)
370Multiplex Communications,   for a multiplex system which include static storage of information. (See Lines With Other Classes, E.)
370Multiplex Communications,   351 for pathfinding or routing, subclass 395.7 for an ATM network with detail of storage access and control, and subclass 531 for magnetic core for storage in multiplex communications which may include a static memory device. (See Lines With Other Classes, F.)
372Coherent Light Generators,   appropriate subclasses for laser type oscillators having utility in information storage. (See Lines With Other Classes, Section F.)
377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   for electrical counters and shift registers. (See Lines With Other Classes, F.)
399Electrophotography,   subclass 10 for storage of data on the operation of an electrophotographic device (i.e., log report) and subclass 83 for job mode selection with memory. (See Lines With Other Classes, F.)
420Alloys or Metallic Compositions,   (see Lines With Other Classes, B.)
427Coating Processes,   for coating of storage element materials. (See Lines With Other Classes, B.)
427Coating Processes,   subclasses 62 , 82, and 100 for superconductor, semiconductor, and piezoelectric products produced, respectively, subclasses 127+ for magnetic base or coating processes. (See Lines With Other Classes, F.)
430Radiation Imagery Chemistry: Process, Composition, or Product Thereof,   appropriate subclasses for radiation imagery chemistry process, composition, or product used as a storage medium. (See Lines With Other Classes, F.)
434Education and Demonstration,   educational devices which may include the storage and retrieval of information. (See Lines With Other Classes, F.)
438Semiconductor Device Manufacturing: Process,   for methods of making semiconductor devices. (See Lines With Other Classes, B.)
438Semiconductor Device Manufacturing: Process,   for methods of making semiconductor devices. (See Lines With Other Classes, F.)
505Superconductor Technology: Apparatus, Material, Process,   subclasses 150+ for high temperature (Tc 30 K) superconducting devices, particularly subclasses 170+ for static information storage or retrieval. (See Lines With Other Classes, F.)
706Data Processing: Artificial Intelligence,   subclass 44 for simulating operational functions of living nerve cells.
711Electrical Computers and Digital Processing Systems: Memory,   subclasses 1+ for addressing combined with specific memory configurations (e.g., extended, expanded, dynamic, etc.), subclasses 100+ for generalized address forming, and subclasses 200+ for generalized storage accessing and control in a digital data processing system. (See Lines With Other Classes, E.)
714Error Detection/Correction and Fault Detection/Recovery,   subclasses 718+ for diagnostic testing of a memory system and subclasses 763+ for digital data error correction during memory access. (See Lines With Other Classes, F.)

SUBCLASSES

[List of Patents for class 365 subclass 1]    1MAGNETIC BUBBLES:
 This subclass is indented under the class definition.  Subject matter where the information stored in a magnetic medium is a domain bubble (a single walled magnetic domain having an outer boundary which closes on itself and has a geometry independent of the boundary of the sheet in which it moves, usually in the form of a cylinder).

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29,where the information stored is in the form of a strip.
  
[List of Patents for class 365 subclass 2]    2Disposition of elements:
 This subclass is indented under subclass 1.  Subject matter directed to the physical or spatial arrangement, packaging, or chip orientation of the magnetic bubbles.

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29Metal Working,   subclass 737 for the assembly and disassembly apparatus of a bubble domain device, subclass 604 for the process of mechanical manufacture of a bubble domain device.
359Optical: Systems and Elements,   subclass 228 for ferro fluid magnetic bubble.
360Dynamic Magnetic Information Storage or Retrieval,   subclasses 110+ for a domain bubble used as a transducer, subclasses 131+ for a domain bubble stored on a dynamic record.
  
[List of Patents for class 365 subclass 3]    3Lattice:
 This subclass is indented under subclass 2.  Subject matter where the bubble lattice consists of a plurality of rows and columns of bubble domains which occupy a spatial arrangement which is determined to a substantial extent by the interaction between the bubbles.
  
[List of Patents for class 365 subclass 4]    4Decoder:
 This subclass is indented under subclass 1.  Subject matter having means to translate one bubble code to another.

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340Communications: Electrical,   subclass 347 for translating analog to digital, digital to analog, or digital to digital.
  
[List of Patents for class 365 subclass 5]    5Logic:
 This subclass is indented under subclass 1.  Subject matter wherein a logic function is performed by the bubble domain device.
  
[List of Patents for class 365 subclass 6]    6Rotating field circuits:
 This subclass is indented under subclass 1.  Subject matter wherein drive circuits provide rotating in-plane magnetic fields in field accessed bubble domain devices.
(1) Note. This subclass also includes rotating field coil arrangement and structure.

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331Oscillators,   for oscillating drive circuits, per se.
  
[List of Patents for class 365 subclass 7]    7Detectors:
 This subclass is indented under subclass 1.  Subject matter where magnetic flux representing the bubble domain information is detected or sensed.

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324Electricity: Measuring and Testing,   subclasses 34+ for magnetic testing.
329Demodulators,   appropriate subclasses for demodulating elements whose resistance or reactance changes in response to an applied magnetic field.
  
[List of Patents for class 365 subclass 8]    8Magnetoresistive:
 This subclass is indented under subclass 7.  Subject matter where the detector includes an element exhibiting a magnetoresistive effect and that element and its associated effect is used to detect or sense magnetic flux from a bubble domain.

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324Electricity: Measuring and Testing,   subclass 46 for determining the characteristics of a magnetic field by a field responsive resistance.
329Demodulators,   appropriate subclasses for demodulating elements whose resistance or reactance changes in response to an applied magnetic field.
335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclass 215 for magnetostrictive type devices.
  
[List of Patents for class 365 subclass 9]    9Hall effect:
 This subclass is indented under subclass 7.  Subject matter where the detector includes an element exhibiting Hall effect and that element and its associated effect is used to detect or sense magnetic flux from a bubble domain.

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324Electricity: Measuring and Testing,   subclass 45 for determining the characteristics of a magnetic field utilizing the Hall effect.
329Demodulators,   appropriate subclasses for demodulating elements whose resistance or reactance changes in response to an applied magnetic field.
  
[List of Patents for class 365 subclass 10]    10Optical:
 This subclass is indented under subclass 7.  Subject matter wherein the intensity of the flux emanating from the bubble information is determined by directing a beam of polarized light at the information location and detecting the rotation of polarization caused by the flux from a bubble domain.

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359Optical: Systems and Elements,   subclasses 281+ and subclasses 484.01 through 484.1 where the properties of the polarized light beam are changed as a result of a magnetic field.
  
[List of Patents for class 365 subclass 11]    11Generators:
 This subclass is indented under subclass 1.  Subject matter where the bubble domain is generated or nucleated.
(1) Note. This subclass includes the generation or nucleation of a bubble domain by a beam of polarized light.
  
[List of Patents for class 365 subclass 12]    12By splitting:
 This subclass is indented under subclass 11.  Subject matter where the bubble domain is generated by splitting (replication) an already existing bubble domain.
  
[List of Patents for class 365 subclass 13]    13Plural interacting paths:
 This subclass is indented under subclass 1.  Subject matter where a plurality of paths or channels containing bubble domains interact with each other by attraction or repulsion.
  
[List of Patents for class 365 subclass 14]    14Closed loop:
 This subclass is indented under subclass 13.  Subject matter where the path or channel is in the form of a closed loop.
  
[List of Patents for class 365 subclass 15]    15Major-minor:
 This subclass is indented under subclass 14.  Subject matter where the path or channel is in the form of a major (main) loop and minor (auxiliary) loop.
  
[List of Patents for class 365 subclass 16]    16With switch at interacting point:
 This subclass is indented under subclass 13.  Subject matter where there is a switch (conductor, bubble domain, different coercivity overlay, overlay spacing, etc.) in the path or channel for propagating the bubble domain into a particular path or channel.
  
[List of Patents for class 365 subclass 17]    17Idler switch:
 This subclass is indented under subclass 16.  Subject matter where the switch is of the idler type where a plurality of bubble domains are continuously recirculated until one bubble domain is ejected by an additional bubble domain that has been injected into the idler switch.
  
[List of Patents for class 365 subclass 18]    18Boundary:
 This subclass is indented under subclass 13.  Subject matter where the bubble domains interact but never cross the boundary located between the paths or channels, the paths or channels may be in the same medium or different mediums.
  
[List of Patents for class 365 subclass 19]    19Conductor propagation:
 This subclass is indented under subclass 1.  Subject matter where the bubble domains are propagated by energizing conductors associated with the bubble domains.
  
[List of Patents for class 365 subclass 20]    20Including A.C. signal:
 This subclass is indented under subclass 19.  Subject matter where at least one of the conductors is energized with an alternating current (A.C.) signal.
  
[List of Patents for class 365 subclass 21]    21Three phase signals:
 This subclass is indented under subclass 19.  Subject matter where a sequence of three conductors are energized by signals 120 out of phase.
  
[List of Patents for class 365 subclass 22]    22One’s and zero’s:
 This subclass is indented under subclass 1.  Subject matter where the bubble domain information is stored in the medium by its location in relation to a particular element or elements (conductor, overlay, path, or channel, etc.) within the bubble domain device.
  
[List of Patents for class 365 subclass 23]    23Plural direction propagation:
 This subclass is indented under subclass 1.  Subject matter where a single bubble domain may be propagated in more than a single direction such as forward and reverse, horizontal to vertical, or vice versa.
  
[List of Patents for class 365 subclass 24]    24Nonsequential:
 This subclass is indented under subclass 23.  Subject matter where the direction of propagation is altered by a nonsequential drive field.
  
[List of Patents for class 365 subclass 25]    25Velocity:
 This subclass is indented under subclass 1.  Subject matter where the velocity or speed of bubble domain propagation is significant.
  
[List of Patents for class 365 subclass 26]    26Turns:
 This subclass is indented under subclass 25.  Subject matter where the turns or corners between paths or channels are significant.
  
[List of Patents for class 365 subclass 27]    27Bias:
 This subclass is indented under subclass 1.  Subject matter where a magnetic bias field aids in the propagation of bubble domains.
(1) Note. Excluded are bias fields used for making the size of the domain bubbles stable.
  
[List of Patents for class 365 subclass 28]    28Variable:
 This subclass is indented under subclass 27.  Subject matter where the magnetic bias field is variable.
  
[List of Patents for class 365 subclass 29]    29Strip domain:
 This subclass is indented under subclass 1.  Subject matter where the bubble domain is elongated into the form of a strip.
  
[List of Patents for class 365 subclass 30]    30In-plane field (nonrotating):
 This subclass is indented under subclass 1.  Subject matter where a magnetic field is provided in the direction of the plane of the magnetic bubble storage medium.
(1) Note. The normal rotating field used for propagating bubbles is not included.
  
[List of Patents for class 365 subclass 31]    31Different size bubbles:
 This subclass is indented under subclass 1.  Subject matter where there are different size bubbles in the same medium or in different mediums.
  
[List of Patents for class 365 subclass 32]    32Multiple magnetic layer:
 This subclass is indented under subclass 1.  Subject matter where there are a plurality of storage layers or the combination of a storage layer and a second nonstorage magnetic layer.
  
[List of Patents for class 365 subclass 33]    33Magnetic storage material:
 This subclass is indented under subclass 1.  Subject matter where the particular material or composition of the storage medium is disclosed.
(1) Note. This subclass includes mediums of the isotropic type.

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252Compositions,   subclasses 62.51+ for magnetic compositions used as a storage medium.
  
[List of Patents for class 365 subclass 34]    34Amorphous:
 This subclass is indented under subclass 33.  Subject matter where the storage medium is of the amorphous type.
  
[List of Patents for class 365 subclass 35]    35Guide structure:
 This subclass is indented under subclass 1.  Subject matter where there is an element or elements for guiding a bubble domain along a path or channel, or a guide means outside the path or channel for confining the bubble domain within a particular path, channel, or area.

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3,for confinement (guide structure) means associated with lattice arrays.
32,where bubbles in another medium are used to guide the information bubbles.
  
[List of Patents for class 365 subclass 36]    36Ion implantation:
 This subclass is indented under subclass 35.  Subject matter where the guide structure is formed by ion implantation.

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427Coating Processes,   subclasses 523+ for the use of ion plating or ion implantation.
  
[List of Patents for class 365 subclass 37]    37Slots or rails:
 This subclass is indented under subclass 35.  Subject matter where the guide structure is a groove or slot in the storage medium or a rail of permalloy on the surface of the storage medium.
(1) Note. This subclass includes apertures in the storage medium.

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41,where the guide structure is a permalloy overlay in the shape of a circular dot or disc.
  
[List of Patents for class 365 subclass 38]    38Zigzag:
 This subclass is indented under subclass 35.  Subject matter where the guide structure is shaped in a zigzag fashion.
  
[List of Patents for class 365 subclass 39]    39Overlays:
 This subclass is indented under subclass 35.  Subject matter where an overlay of permalloy is used to guide the bubble domain along a path or channel.
(1) Note. Not included are common permalloy overlays known as T-I bars and Y-I bars.
  
[List of Patents for class 365 subclass 40]    40On opposite sides of storage medium:
 This subclass is indented under subclass 39.  Subject matter where the overlays are on both sides of the storage medium.
  
[List of Patents for class 365 subclass 41]    41Dots:
 This subclass is indented under subclass 39.  Subject matter where the overlay is in the shape of a dot or disc.
  
[List of Patents for class 365 subclass 42]    42Wedges:
 This subclass is indented under subclass 39.  Subject matter where the overlay is in the shape of a wedge, also known as an angelfish.
  
[List of Patents for class 365 subclass 43]    43Chevrons:
 This subclass is indented under subclass 39.  Subject matter where the overlay is in the shape of a chevron; chevrons are shaped like sergeant strips.
  
[List of Patents for class 365 subclass 44]    44Rectangular bars:
 This subclass is indented under subclass 39.  Subject matter where the overlay is in the shape of a rectangular bar.
(1) Note. Not included at I bars associated with common T-I bars and Y-I bars.
  
[List of Patents for class 365 subclass 45]    45ANALOG STORAGE SYSTEMS:
 This subclass is indented under the class definition.  Subject matter in which the signal is a direct or analogous function of the information or intelligence stored.

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315Electric Lamp and Discharge Devices: Systems,   subclass 8.51 for cathode-ray tube (CRT) storage.
320Electricity: Battery or Capacitor Charging or Discharging,   subclasses 166+ for capacitor charging or discharging, per se.
359Optical: Systems and Elements,   subclasses 1+ for analog storage systems where there is a holographic storage medium storing an analog information signal absent any electrical circuitry.
370Multiplex Communications,   appropriate subclasses for multiplex switching techniques similar to addressing or the handling of memory information signals.
  
[List of Patents for class 365 subclass 46]    46Resistive:
 This subclass is indented under subclass 45.  Subject matter where the storage element is resistive.

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148,for digital resistive storage elements.
  
[List of Patents for class 365 subclass 47]    47Thermoplastic:
 This subclass is indented under subclass 45.  Subject matter where the storage element is thermoplastic.

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126,for digital thermoplastic storage elements.

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347Incremental Printing of Symbolic Information,   subclass 113 for electrostatic marking devices in which a latent image is made visible by applying heat to cause plastic deformation of a charged medium.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal, particularly subclasses 314 through 325for video recording and reproduction on a tape medium.
  
[List of Patents for class 365 subclass 48]    48Magnetic:
 This subclass is indented under subclass 45.  Subject matter where the storage element is magnetic.

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399Electrophotography,   subclass 10 for storage of data on the operation of an electrophotographic device (i.e., log report) and subclass 83 for job mode selection with memory.
  
[List of Patents for class 365 subclass 49.1]    49.1ASSOCIATIVE MEMORIES (CONTENT ADDRESSABLE MEMORY-CAM):
 This subclass is indented under the class definition.  Subject matter wherein the location of the information is determined by its content rather than by its address.
(1) Note. Associative memories are also referred to as content or tag memories.
  
[List of Patents for class 365 subclass 49.11]    49.11Flip-Flop:
 This subclass is indented under subclass 49.1.  Subject matter wherein the storage element is a bistable logic circuit (i.e., one in which information need not be periodically refreshed).
  
[List of Patents for class 365 subclass 49.12]    49.12Capacitor cell:
 This subclass is indented under subclass 49.1.  Subject matter wherein the storage element is a capacitative device (i.e., one in which information need to be periodically refreshed).
  
[List of Patents for class 365 subclass 49.13]    49.13Ferroelectric cell:
 This subclass is indented under subclass 49.1.  Subject matter wherein the storage element is a ferroelectric memory cell.
  
[List of Patents for class 365 subclass 49.15]    49.15Auxiliary lines:
 This subclass is indented under subclass 49.1.  Subject matter where a line that carries hit/miss signals (match or mismatch signals) in a content addressable memory (CAM) is used for comparison in addition to the lines that carry the bit lines.
  
[List of Patents for class 365 subclass 49.16]    49.16Segmented/partitioned of cells:
 This subclass is indented under subclass 49.1.  Subject matter where CAM elements are grouped into segments or partitions.
  
[List of Patents for class 365 subclass 49.17]    49.17Compare/Search/Match circuit:
 This subclass is indented under subclass 49.1.  Subject matter including a circuit for comparison of storage data and search data and outputing match/mismatch (hit/miss) signals.
  
[List of Patents for class 365 subclass 49.18]    49.18Priority encoders:
 This subclass is indented under subclass 49.1.  Subject matter including means to indicate an order of transmission of search data in a content addressable memory (CAM).
  
[List of Patents for class 365 subclass 50]    50Magnetic cell:
 This subclass is indented under subclass 49.1.  Subject matter wherein the storage element changes a storage state when a magnetic field is applied.
  
[List of Patents for class 365 subclass 51]    51FORMAT OR DISPOSITION OF ELEMENTS:
 This subclass is indented under the class definition.  Subject matter with specific details of the physical or spatial arrangement of the elements.

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52,for hardware associated with storage elements.
63,for wiring paths of storage elements.

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29Metal Working,   subclasses 592.1+ for the processes of mechanical manufacture of storage elements.
  
[List of Patents for class 365 subclass 52]    52HARDWARE FOR STORAGE ELEMENTS:
 This subclass is indented under the class definition.  Subject matter having mechanical components or parts which assist in the operation of the storage element.

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51,for physical arrangement of storage elements.
63,for connections between storage elements.

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174Electricity: Conductors and Insulators,   subclasses 50+ for electrical boxes and housings.
361Electricity: Electrical Systems and Devices,   subclasses 600+ for hardware and mounting assembly with plural diverse electrical components.
  
[List of Patents for class 365 subclass 53]    53Shields:
 This subclass is indented under subclass 52.  Subject matter which includes means associated with the storage device for reducing or preventing electric or magnetic coupling.

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206,for noise suppression.

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307Electrical Transmission or Interconnection Systems,   subclass 91 for magnetic or electrostatic field control shielding coupled to other systems.
330Amplifiers,   subclass 170 for interstage coupling with shielding means.
439Electrical Connectors,   subclasses 607.01 through 607.05for an electrical connector having or providing inductive or capacitive shielding.
  
[List of Patents for class 365 subclass 54]    54Ground plane:
 This subclass is indented under subclass 52.  Subject matter which includes a ground plane as one of the components of the storage device.
  
[List of Patents for class 365 subclass 55]    55Magnetic:
 This subclass is indented under subclass 52.  Subject matter wherein the storage device is magnetic.
  
[List of Patents for class 365 subclass 56]    56Spacers:
 This subclass is indented under subclass 55.  Subject matter which includes means associated with a storage device for separating storage elements or components of the storage device.
  
[List of Patents for class 365 subclass 57]    57Keeper:
 This subclass is indented under subclass 55.  Subject matter which includes a component of the storage device which is made of highly permeable material and is used to focus or concentrate the magnetic flux emanating from the storage device.
  
[List of Patents for class 365 subclass 58]    58Slot:
 This subclass is indented under subclass 55.  Subject matter where a groove or slot is located within one of the components of the storage device or the storage element itself.
  
[List of Patents for class 365 subclass 59]    59Embedded conductor:
 This subclass is indented under subclass 55.  Subject matter wherein a conductor is embedded within one of the components of the magnetic device or the magnetic element itself.
  
[List of Patents for class 365 subclass 60]    60Air gap:
 This subclass is indented under subclass 55.  Subject matter where an air gap or an air gap space filled with a material which has a permeability of about one is located within the storage element, within components associated with the device or between the element and components.
  
[List of Patents for class 365 subclass 61]    61Hairpin conductor:
 This subclass is indented under subclass 55.  Subject matter where a conductor associated with the storage device has the general shape of a hairpin.
  
[List of Patents for class 365 subclass 62]    62Permanent magnet:
 This subclass is indented under subclass 55.  Subject matter where a permanent magnet is used as a component in the magnetic storage device.

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335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclass 209 for magnets, per se.
  
[List of Patents for class 365 subclass 63]    63INTERCONNECTION ARRANGEMENTS:
 This subclass is indented under the class definition.  Subject matter having physical paths by which information is transferred to, from, or between storage elements.

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189.011,for reading or writing information from or into a static memory device.
  
[List of Patents for class 365 subclass 64]    64Optical:
 This subclass is indented under subclass 63.  Subject matter in which optical elements or paths are used to contact storage elements.

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215,for reading and writing a memory location with an optical beam.
234,for locating a memory location with an optical beam.

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250Radiant Energy,   subclass 227 for prephotocell system which includes light conducting rods, subclass 551 for optical/electrical signal isolators, subclass 553 for solid-state light source with an array or matrix of photocells.
359Optical: Systems and Elements,   subclasses 1+ for storage systems where there is a holosgraphic storage medium storing information signals absent any electrical circuitry.
385Optical Waveguides,   appropriate subclasses for light transmitting fibers, rods, or pipes.
  
[List of Patents for class 365 subclass 65]    65Ferroelectric:
 This subclass is indented under subclass 63.  Subject matter where the interconnected storage elements are ferroelectric devices.

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109,and 117, for ferroelectric memories involving radiant energy.
145,for other ferroelectric memories.

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349Liquid Crystal Cells, Elements and Systems,   subclasses 37 , 49, and 172+ for light control in ferroelectric liquid crystal devices.
359Optical: Systems and Elements,   subclasses 245+ for light control with ferroelectric devices and subclasses 484.01 through 484.1 for polarization using ferroelectric devices.
  
[List of Patents for class 365 subclass 66]    66Magnetic:
 This subclass is indented under subclass 63.  Subject matter where the storage elements are magnetic devices.
  
[List of Patents for class 365 subclass 67]    67Plural diagonal:
 This subclass is indented under subclass 66.  Subject matter in which single or plural windings are threaded or coupled to the magnetic elements at an angle of approximately 45 to the row or columns. For example:

Image 1 for class 365 subclass 67

  
[List of Patents for class 365 subclass 68]    68Tree:
 This subclass is indented under subclass 66.  Subject matter where the interconnections of the cells are shaped as a divergent branching arrangement with each preceding cell output connected to a plurality of succeeding cells or vice versa. For example:

Image 1 for class 365 subclass 68

  
[List of Patents for class 365 subclass 69]    69Crossover:
 This subclass is indented under subclass 66.  Subject matter where a row (column) of cells are interconnected to an adjacent row (column) by mutually crossing over prior to the end of the row (column). For example:

Image 1 for class 365 subclass 69

  
[List of Patents for class 365 subclass 70]    70Woven:
 This subclass is indented under subclass 66.  Subject matter where the magnetic storage cells are interconnected by windings which are woven as a weft and warp. For example:

Image 1 for class 365 subclass 70

  
[List of Patents for class 365 subclass 71]    71Negative resistance:
 This subclass is indented under subclass 63.  Subject matter where the interconnected storage elements exhibit negative resistance.

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159,for negative resistance storage elements.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 568+ for miscellaneous circuits utilizing a negative resistance device.
  
[List of Patents for class 365 subclass 72]    72Transistors or diodes:
 This subclass is indented under subclass 63.  Subject matter where the interconnected storage elements are transistors or diodes.

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104,105 and 174+, for particular transistor or diode storage elements.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses for transistors and diodes, per se.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses for miscellaneous circuits using transistors or diodes.
  
[List of Patents for class 365 subclass 73]    73RECIRCULATION STORES:
 This subclass is indented under the class definition.  Subject matter in which the output of a storage element is connected back to its input, i.e., to form a storage loop.
(1) Note. This subclass does not accept shift registers, per se.

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78,for stepwise movement which does not loop the output of a storage element back to its input.
80,for magnetic shift registers which do not have a feedback means.

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370Multiplex Communications,   appropriate subclasses for multiplex switching techniques similar to addressing or the handling of memory information signals.
377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclasses 122 , 124 and 126 for ring counters and subclass 129 for pulse counters where the pulse are continuously circulated in a closed loop.
  
[List of Patents for class 365 subclass 74]    74Magnetic:
 This subclass is indented under subclass 73.  Subject matter where the recirculation storage device uses magnetic storage elements.

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80,for magnetic shift registers.
  
[List of Patents for class 365 subclass 75]    75Stepwise:
 This subclass is indented under subclass 73.  Subject matter wherein the information is moved through the memory in a stepwise manner.
  
[List of Patents for class 365 subclass 76]    76Delay lines:
 This subclass is indented under subclass 73.  Subject matter wherein the information is moved through a delay line.

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93,for magnetic shift registers which include a delay means.
194,for read/write circuits which include a delay signal.

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333Wave Transmission Lines and Networks,   subclasses 138+ for delay lines, per se.
  
[List of Patents for class 365 subclass 77]    77Plural paths:
 This subclass is indented under subclass 73.  Subject matter wherein the information is recirculated through plural paths.

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370Multiplex Communications,   subclasses 351+ for pathfinding or routing in multiplex communications which may include a static memory device.
  
[List of Patents for class 365 subclass 78]    78PLURAL SHIFT REGISTER MEMORY DEVICES:
 This subclass is indented under the class definition.  Subject matter in which information flows through two or more shift registers which are used in a static memory system.

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711Electrical Computers and Digital Processing Systems: Memory,   subclasses 109+ for more than nominal recitation of a shift register in combination with accessing and control in a digital data processing environment and subclasses 117+ for hierarchical memory accessing and control.
  
[List of Patents for class 365 subclass 80]    80MAGNETIC SHIFT REGISTERS:
 This subclass is indented under the class definition.  Subject matter where information is transferred (shifted) from one magnetic element to another along an array.

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377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclasses 57 and 64.
  
[List of Patents for class 365 subclass 81]    81Bidirectional:
 This subclass is indented under subclass 80.  Subject matter in which information can be shifted forward or backward.
  
[List of Patents for class 365 subclass 82]    82Two cells per bit:
 This subclass is indented under subclass 80.  Subject matter in which two magnetic elements are required to store a single bit of information.

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131,for nonshifting systems which require two elements to store a single bit of information.
  
[List of Patents for class 365 subclass 83]    83SiPo/PiSo:
 This subclass is indented under subclass 80.  Subject matter where the magnetic shift register has a serial input with parallel out or vice versa.

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219,for read/write circuits which have serial input with parallel out or vice versa.
  
[List of Patents for class 365 subclass 84]    84Core in transfer loop:
 This subclass is indented under subclass 80.  Subject matter where a magnetic core is located in the transfer loop between the storage elements of the shift register.
  
[List of Patents for class 365 subclass 85]    85Continuous:
 This subclass is indented under subclass 80.  Subject matter having a magnetic shift register where the magnetic element is composed of a continuous material with a plurality of storage positions along its length.

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134,for nonshifting systems which use continuous type storage elements.
  
[List of Patents for class 365 subclass 86]    86Plated wire:
 This subclass is indented under subclass 85.  Subject matter having a continuous magnetic element which is a nonmagnetic wire, ribbon, or tube that is coated with a thin magnetic film.
  
[List of Patents for class 365 subclass 87]    87Thin film:
 This subclass is indented under subclass 80.  Subject matter having a magnetic shift register where the device is a thin film cell which has a thickness of approximately 1 to 12,000 angstroms.

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86,for magnetic shift register where the element is composed of a continuous thin film material.
171,for a nonshifting system where the element is a thin film material.
  
[List of Patents for class 365 subclass 88]    88Domain tip:
 This subclass is indented under subclass 87.  Subject matter where the magnetic element has a domain in the shape of a tear, "lenicular."
  
[List of Patents for class 365 subclass 89]    89Logic:
 This subclass is indented under subclass 80.  Subject matter where a magnetic shift register is used as a logic device.
(1) Note. This subclass is limited to logic circuits wherein the magnetic element is used as a storage device.

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307Electrical Transmission or Interconnection Systems,   subclasses 406 , 407, and 408 for logic circuits which are saturable reactor devices.
326Electronic Digital Logic Circuitry,   appropriate subclasses for electronic digital logic circuits.
708Electrical Computers: Arithmetic Processing and Calculating,   subclasses 100+ for logic devices which perform mathematical computations.
  
[List of Patents for class 365 subclass 90]    90Multiaperture cell:
 This subclass is indented under subclass 80.  Subject matter having magnetic shift registers where the cell contains two or more apertures for storing information.

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140,for a multiaperture cell used in a nonshifting magnetic system.

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307Electrical Transmission or Interconnection Systems,   subclasses 408 and 422 for multiaperture cells in nonlinear reactor systems.
  
[List of Patents for class 365 subclass 91]    91Ladder:
 This subclass is indented under subclass 90.  Subject matter wherein the cell has an array of apertures in the shape of squares or rectangles.
  
[List of Patents for class 365 subclass 92]    92With other type core:
 This subclass is indented under subclass 90.  Subject matter where the magnetic shift register includes multiaperture cells plus other types of storage cells.

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711Electrical Computers and Digital Processing Systems: Memory,   subclasses 1+ for addressing combined with specific memory configurations (e.g., extended, expanded, dynamic, etc.) and subclasses 101+ for storage accessing and control of specific memory compositions in a digital data processing system.
  
[List of Patents for class 365 subclass 93]    93Including delay means:
 This subclass is indented under subclass 80.  Subject matter where a magnetic shift register includes a delay network or delay means.
(1) Note. The mere delay of a signal is not appropriate subject matter for this subclass since all shift registers inherently delay a signal.

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76,for recirculation storage device which includes delay lines.
194,for read/write circuits which use a delay signal.

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326Electronic Digital Logic Circuitry,   subclasses 93+ for clocking or synchronizing of logic gates or stages.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   particularly subclasses 261+ and 392+ for miscellaneous circuits utilizing delay.
333Wave Transmission Lines and Networks,   subclasses 138+ for passive delay networks.
  
[List of Patents for class 365 subclass 94]    94READ ONLY SYSTEMS (I.E., SEMI-PERMANENT):
 This subclass is indented under the class definition.  Subject matter in which information stored is not usually erased, e.g., destructively stored, as for repetitive readout.
(1) Note. Read only systems are normally read by an addressing means where coded record sensors are usually scanned spatially.

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120,for information masking.

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235Registers,   subclasses 435+ for coded record sensors.
337Electricity: Electrothermally or Thermally Actuated Switches,   appropriate subclass for a switch, per se.
340Communications: Electrical,   subclasses 2.2 through 2.31for a channel selecting matrix and subclasses 14.1-14.69 for a decoder matrix.
  
[List of Patents for class 365 subclass 95]    95With override (i.e., latent images):
 This subclass is indented under subclass 94.  Subject matter wherein the original information may be temporarily overridden, i.e., memory may be operated as read/write with read only information recoverable.
  
[List of Patents for class 365 subclass 96]    96Fusible:
 This subclass is indented under subclass 94.  Subject matter wherein the storage element is a fusible link.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 50 , 530 and 928 for shorted (e.g., anti-fuse) element.
  
[List of Patents for class 365 subclass 97]    97Magnetic:
 This subclass is indented under subclass 94.  Subject matter where the rod only memory uses magnetic storage elements.
  
[List of Patents for class 365 subclass 98]    98Random core:
 This subclass is indented under subclass 97.  Subject matter in which the storage system is composed of a magnetic matrix where some of the intersections have storage elements and other interconnections do not.
  
[List of Patents for class 365 subclass 99]    99Random writing:
 This subclass is indented under subclass 97.  Subject matter in which the storage system is composed of a magnetic matrix with storage elements at its intersections of which only some are wired.
  
[List of Patents for class 365 subclass 100]    100Resistive:
 This subclass is indented under subclass 94.  Subject matter wherein the storage element is resistive.

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148,for other resistive storage elements.
  
[List of Patents for class 365 subclass 101]    101Inductive:
 This subclass is indented under subclass 94.  Subject matter wherein the storage element in inductive.

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129,for other inductive storage elements.

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336Inductor Devices,   for inductors, per se.
  
[List of Patents for class 365 subclass 102]    102Capacitative:
 This subclass is indented under subclass 94.  Subject matter wherein the storage element is capacitative.

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149,for other capacitative storage elements.
  
[List of Patents for class 365 subclass 103]    103Semiconductive:
 This subclass is indented under subclass 94.  Subject matter wherein the storage element is a semiconductor.

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174+,for other semiconductor storage elements.

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438Semiconductor Device Manufacturing: Process,   for methods of making semiconductor memory devices.
  
[List of Patents for class 365 subclass 104]    104Transistors:
 This subclass is indented under subclass 103.  Subject matter wherein the semiconductor storage element includes one or more transistors.
  
[List of Patents for class 365 subclass 105]    105Diodes:
 This subclass is indented under subclass 103.  Subject matter wherein the semiconductor storage element includes one or more diodes.

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115,for radiant energy memory systems which use diodes.
175,for other diode storage elements.
  
[List of Patents for class 365 subclass 106]    106RADIANT ENERGY:
 This subclass is indented under the class definition.  Subject matter wherein the condition or state of a memory material or element is altered in accordance with the information stored.
(1) Note. The material is altered by a radiation beam and/or changes its own state of generating radiation. Information is usually read out electrically, e.g., a semiconductive material is irradiated to cause it to conduct.

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64,for optical interconnection arrangements.
120,for radiant energy storage using informational masking.
215,and 234, for optical read/write circuits and addressing circuits, respectively.
237,for electron beam addressing.

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250Radiant Energy,   for radiant energy devices, per se.
257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 10 , 11, 21, 53-56, 113-118, 184-189, 225-234, 257, 258, 290-294, and 414-470 for radiation-sensitive active semiconductor devices.
313Electric Lamp and Discharge Devices,   for lamp and discharge devices, per se.
315Electric Lamp and Discharge Devices: Systems,   for lamp and discharge systems.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 514+ for miscellaneous circuits effected by light.
346Recorders,   subclasses 107.1+ for optical recorders for recording phenomenal information.
347Incremental Printing of Symbolic Information,   subclasses 224+ for radiation marking, particularly subclass 264 for record receiver or handling means therefor, subclasses 225+ for scanning apparatus or method for marking information, particularly subclass 262 for record receiver or handling means therefor, and subclasses 129+ for electrostatic recorders including photoscanning device.
358Facsimile and Static Presentation Processing,   subclasses 296 through 304for facsimile recording.
359Optical: Systems and Elements,   for optical devices, per se, and systems.
369Dynamic Information Storage or Retrieval,   subclasses 100+ for optical sound recorders.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal, particularly subclass 342 for CRT beam recording in a video recording and reproduction device.
  
[List of Patents for class 365 subclass 107]    107Chemical fluids:
 This subclass is indented under subclass 106.  Subject matter wherein the memory material is a chemical fluid.

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45,for analog chemical fluid storage devices.
153,for electrochemical storage elements not using radiant energy.

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205Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,   subclass 68 for recording devices.
252Compositions,   subclass 62.2 for chemical fluids, per se, used in electrical devices.
324Electricity: Measuring and Testing,   subclass 94 for measuring electricity with a chemical fluid.
430Radiation Imagery Chemistry: Process, Composition, or Product Thereof,   appropriate subclasses for radiation sensitive compositions and elements.
  
[List of Patents for class 365 subclass 108]    108Liquid crystal:
 This subclass is indented under subclass 106.  Subject matter wherein the memory material is a liquid crystal, i.e., pneumatic liquid crystal.

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345Computer Graphics Processing and Selective Visual Display Systems,   subclasses 38 , 50+, and 87+ for liquid crystal display devices with selective electrical control means for providing a human sensible image or message to be displayed.
349Liquid Crystal Cells, Elements and Systems,   appropriate subclasses for light control with liquid crystal materials.
  
[List of Patents for class 365 subclass 109]    109Photoconductive and ferroelectric:
 This subclass is indented under subclass 106.  Subject matter wherein the memory element has both photoconductive and ferroelectric properties and/or materials.

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112,for photoconductive memory elements.
117,for ferroelectric memory elements using radiant energy.
145,for ferroelectric memory elements not using radiant energy.
  
[List of Patents for class 365 subclass 110]    110Electroluminescent and photoconductive:
 This subclass is indented under subclass 106.  Subject matter wherein the memory element has both solid-state electroluminescent and photoconductive properties and/or materials.

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111,for electroluminescent memory elements.
112,for photoconductive memory elements.
  
[List of Patents for class 365 subclass 111]    111Electroluminescent:
 This subclass is indented under subclass 106.  Subject matter wherein the storage material is a solid-state electroluminescent material.

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120,for information masking storage where the electroluminescent element is used as a radiation source and not to store information.

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250Radiant Energy,   subclasses 458.1+ for luminophor irradiation, subclasses 483.1+ for luminescent devices.
340Communications: Electrical,   foreign art collections FOR 281-282 for a selective electroluminescent element matrix.
345Computer Graphics Processing and Selective Visual Display Systems,   subclasses 36 , 45, and 76+ for electroluminescent display devices combined with selective electrical control means for producing a human sensible image or message.
399Electrophotography,   subclass 158 for image reproduction and display therefore.
  
[List of Patents for class 365 subclass 112]    112Photoconductive:
 This subclass is indented under subclass 106.  Subject matter wherein the storage material is a photoconductive material.

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250Radiant Energy,   subclasses 200+ for photosensitive cells and circuits.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 514+ for miscellaneous light sensitive circuits.
  
[List of Patents for class 365 subclass 113]    113Amorphous:
 This subclass is indented under subclass 106.  Subject matter wherein the storage material can be changed from a crystalline (ordered) structure to an amorphous (disordered) structure by means of radiant energy.

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163,for amorphous storage elements using electrical properties.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses, especially subclasses 2 through 5,16, 52 through 63, 646, and 650 for amorphous material devices.
  
[List of Patents for class 365 subclass 114]    114Semiconductive:
 This subclass is indented under subclass 106.  Subject matter wherein the storage material is a semiconductor.

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174,for semiconductive storage elements not involving radiant energy.
  
[List of Patents for class 365 subclass 115]    115Diodes:
 This subclass is indented under subclass 114.  Subject matter wherein the semiconductive storage device includes one or more diodes.

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250Radiant Energy,   subclass 533 for photocells with solid-state light-emitting diodes in the configuration of an array or matrix.
  
[List of Patents for class 365 subclass 116]    116Plasma:
 This subclass is indented under subclass 106.  Subject matter wherein the storage element is a gaseous discharge device.

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313Electric Lamp and Discharge Devices,   for appropriate discharge device, per se.
315Electric Lamp and Discharge Devices: Systems,   subclass 169.4 for gas display panel device with energizing means.
345Computer Graphics Processing and Selective Visual Display Systems,   subclasses 37 , 41+, and 60+ for gaseous discharge display devices combined with selective electrical control means for providing a human sensible image or message to be displayed.
  
[List of Patents for class 365 subclass 117]    117Ferroelectric:
 This subclass is indented under subclass 106.  Subject matter wherein the storage element is a ferroelectric material.

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109,for ferroelectric plus photoconductive radiant energy storage elements.
121,for storage of information using informational masking with polarization wherein the polarizer may be a ferroelectric device.
145,for ferroelectric memory elements not involving radiation.

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359Optical: Systems and Elements,   subclasses 245+ for light control with ferroelectric devices and subclasses 484.01 through 484.1 for polarization using ferroelectric devices.
  
[List of Patents for class 365 subclass 118]    118Electron beam:
 This subclass is indented under subclass 106.  Subject matter wherein the memory material has its state changed by radiant energy which is an electron beam.
(1) Note. This subclass will accept cathode-ray tube (CRT) storage with random access means.

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128,for memories using electron beams for information masking, e.g., CRT with masking means.
217,for read/write circuits for an electron beam storage system.
237,for addressing a memory with an electron beam.

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250Radiant Energy,   appropriate subclass for electron beam devices, particularly subclasses 492.1+ for irradiating of objects or materials.
313Electric Lamp and Discharge Devices,   subclass 391 for CRT storage device, per se.
315Electric Lamp and Discharge Devices: Systems,   subclasses 8.5+ for electron beam storage systems and subclasses 84.5+ for gaseous discharge tube storage systems.
377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclass 99 for counters using beam type tubes.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal, particularly subclass 342 for CRT beam recording in a video recording and reproduction device.
  
[List of Patents for class 365 subclass 119]    119Color centers:
 This subclass is indented under subclass 106.  Subject matter wherein the memory material is a crystal containing local imperfections, which will absorb (or generate) light of a particular frequency (color) depending on the energy level of the electron at the imperfection.

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349Liquid Crystal Cells, Elements and Systems,   subclasses 69 through 71for color liquid crystal material used in light control.
430Radiation Imagery Chemistry: Process, Composition, or Product Thereof,   subclasses 541+ for radiation sensitive color changing composition.
  
[List of Patents for class 365 subclass 120]    120INFORMATION MASKING:
 This subclass is indented under the class definition.  Subject matter wherein a radiant beam is altered as a function of the information stored, e.g., light beam used to read information stored as transparent and opaque areas in a memory element.

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106,for memories using radiant energy without information masking.

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235Registers,   subclasses 454+ for sensing records with light beams.
346Recorders,   subclasses 107.1+ for optical recorders for recording phenomenal information, subclass 74.1 for magnetic visible image recording.
347Incremental Printing of Symbolic Information,   subclasses 224+ for radiation marking, particularly subclass 264 for record receiver or handling means therefor, subclasses 225+ for scanning apparatus or method for marking information, particularly subclass 262 for record receiver or handling means therefor, and subclasses 129+ for electrostatic recorders including photoscanning device.
358Facsimile and Static Presentation Processing,   subclasses 296 through 304for facsimile recording.
369Dynamic Information Storage or Retrieval,   subclasses 100+ for optical sound recorders.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal in a video recording and reproduction device.
  
[List of Patents for class 365 subclass 121]    121Polarization:
 This subclass is indented under subclass 120.  Subject matter wherein the polarization of the radiation beam is altered as a function of the information stored.

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117,for polarization with ferroelectric memory materials.

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359Optical: Systems and Elements,   subclasses 240+ and subclasses 484.01 through 484.1 for changing the properties of polarized light by an applied field.
  
[List of Patents for class 365 subclass 122]    122Magneto-optical:
 This subclass is indented under subclass 121.  Subject matter wherein the polarization is altered by a memory material which has magneto-optic properties.

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360Dynamic Magnetic Information Storage or Retrieval,   subclasses 114.01 through 114.1for dynamic magnetic reproducing only, using light.
  
[List of Patents for class 365 subclass 123]    123Bragg cells:
 This subclass is indented under subclass 120.  Subject matter wherein a Bragg cell is used to diffract a light beam into plural light beams.
  
[List of Patents for class 365 subclass 124]    124Diffraction:
 This subclass is indented under subclass 120.  Subject matter wherein the radiation beam is diffracted as a function of the information stored.

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356Optics: Measuring and Testing,   subclass 450 for measuring systems using diffracted light.
359Optical: Systems and Elements,   subclasses 566+ for diffraction gratings.
  
[List of Patents for class 365 subclass 125]    125Holograms:
 This subclass is indented under subclass 124.  Subject matter wherein object and reference beams are required to store information.

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216,for circuits used to read/write holographic memories.

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235Registers,   subclass 457 for holographic card readers.
359Optical: Systems and Elements,   subclasses 1+ for storage systems where there is a holographic storage medium storing information signal absent any electrical circuitry.
  
[List of Patents for class 365 subclass 126]    126Thermoplastic:
 This subclass is indented under subclass 120.  Subject matter wherein the radiation beam is altered by different thicknesses of a thermoplastic memory material.

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347Incremental Printing of Symbolic Information,   subclass 113 for electrostatic marking apparatus and processes in which a latent image is made visible by applying heat to cause plastic deformation of a charged medium.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal, particularly subclasses 314 through 325for video recording and reproduction on a tape medium.
  
[List of Patents for class 365 subclass 127]    127Transparency:
 This subclass is indented under subclass 120.  Subject matter wherein the radiation beam is altered by the transparent and opaque areas of the memory material.

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113,for amorphous memories exhibiting transparency properties.

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235Registers,   subclasses 454+ for optical card readers.
386Motion Video Signal Processing for Recording or Reproducing,   appropriate subclasses for recording television or video signal in a video recording and reproduction device.
  
[List of Patents for class 365 subclass 128]    128Electron beams:
 This subclass is indented under subclass 120.  Subject matter wherein the radiation beam being altered is an electron beam.

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118,for other electron beam memories.
237,for circuits to direct an electron beam to a memory location.

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250Radiant Energy,   appropriate subclass for electron beam devices.
313Electric Lamp and Discharge Devices,   subclasses 391+ for cathode-ray tube (CRT) storage device, per se.
315Electric Lamp and Discharge Devices: Systems,   subclasses 8.5+ for electron beam storage systems and subclasses 84.5+ for gaseous discharge tube storage systems.
377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclass 99 for counters using beam type tubes.
  
[List of Patents for class 365 subclass 129]    129SYSTEMS USING PARTICULAR ELEMENT:
 This subclass is indented under the class definition.  Subject matter where the type of storage element used is significant.

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94+,for storage elements used as read only memories.
106+,for storage elements involving radiant energy.
120+,for storage elements involving informational masking.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses for particular active solid-state devices which may be found in a static memory device, including subclasses 225 , 260, 390, 391, 903, 904, and 910 for solid-state static memory or memory element structure.
313Electric Lamp and Discharge Devices,   for appropriate lamp and discharge devices, per se.
315Electric Lamp and Discharge Devices: Systems,   for particular circuits using appropriate lamp and discharge devices.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses and particularly subclasses 199+ for bistable devices which may be used in memory cells or arrays.
359Optical: Systems and Elements,   for particular optical elements.
  
[List of Patents for class 365 subclass 130]    130Three-dimensional magnetic array:
 This subclass is indented under subclass 129.  Subject matter where the magnetic storage elements are arrayed in three dimensions.
  
[List of Patents for class 365 subclass 131]    131Two magnetic cells per bit:
 This subclass is indented under subclass 129.  Subject matter where two magnetic elements are used to store a single bit of information.

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82,for two cells per bit magnetic shift registers.
  
[List of Patents for class 365 subclass 132]    132Different size cores:
 This subclass is indented under subclass 129.  Subject matter where at least two of the magnetic elements in the system have different dimensions or a different number of winding turns.
  
[List of Patents for class 365 subclass 133]    133Cells of diverse coercivity:
 This subclass is indented under subclass 129.  Subject matter in which the material of different magnetic elements or the same magnetic element exhibits diverse magnetic properties.
  
[List of Patents for class 365 subclass 134]    134Continuous cells:
 This subclass is indented under subclass 129.  Subject matter where the magnetic element is composed of a continuous material with a plurality of storage positions along its length.

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85,for magnetic shift registers which use continuous cells as its storage elements.
  
[List of Patents for class 365 subclass 135]    135Elongated or bar-shaped cell:
 This subclass is indented under subclass 134.  Subject matter where the cross section of the magnetic storage element is small compared to its length.

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86,for magnetic shift registers which use plated wire as the storage element.
  
[List of Patents for class 365 subclass 136]    136Twisters:
 This subclass is indented under subclass 135.  Subject matter where the magnetic storage element has an easy axis in the helical direction (approximately 45) or is a wire and is formed in the shape of a helix.
  
[List of Patents for class 365 subclass 137]    137Tubular:
 This subclass is indented under subclass 135.  Subject matter where the magnetic storage element is in the shape of a hollow tube.
  
[List of Patents for class 365 subclass 138]    138Chain:
 This subclass is indented under subclass 135.  Subject matter where the magnetic storage device is an elongated element with circular aperture storage positions along its length.

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91,for magnetic shift registers wherein the storage device is an elongated element with square or rectangular storage apertures.
  
[List of Patents for class 365 subclass 139]    139Plated wire:
 This subclass is indented under subclass 135.  Subject matter having a continuous element which is a nonmagnetic wire or ribbon that is coated with a thin magnetic film.
(1) Note. A wire is considered to be an elongated material of indeterminate length.

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86,for magnetic shift registers which use continuous plated wire as its storage elements.
171,for magnetic thin film storage elements which are not of the continuous type.
  
[List of Patents for class 365 subclass 140]    140Multiaperture cell:
 This subclass is indented under subclass 129.  Subject matter having a magnetic cell which contains two or more apertures for storing information.

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90,for magnetic shift registers which use multiaperture storage cells.

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307Electrical Transmission or Interconnection Systems,   subclasses 408 and 422 for multiaperture cells in nonlinear reactor systems.
  
[List of Patents for class 365 subclass 141]    141Aperture plate:
 This subclass is indented under subclass 140.  Subject matter where a plurality of apertures in a magnetic plate are in a common plane which formulates rows and columns.

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90,for magnetic shift registers which use multiaperture storage cells.
  
[List of Patents for class 365 subclass 142]    142Aperture with transverse axis:
 This subclass is indented under subclass 140.  Subject matter where the axes of the apertures of the multiaperture element are not parallel.
  
[List of Patents for class 365 subclass 143]    143Biax:
 This subclass is indented under subclass 142.  Subject matter where the axes of the aperture are perpendicular.
  
[List of Patents for class 365 subclass 144]    144Same size apertures:
 This subclass is indented under subclass 140.  Subject matter where all of the apertures of the multiaperture element are the same size.
  
[List of Patents for class 365 subclass 145]    145Ferroelectric:
 This subclass is indented under subclass 129.  Subject matter where the storage element is ferroelectric.

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65,for interconnection arrangements which use ferroelectric storage elements.
109,and 117, for ferroelectrics involving radiant energy.
157,for piezoelectric storage devices.

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252Compositions,   subclass 62.9 for a composition designed for use as piezoelectric material.
310Electrical Generator or Motor Structure,   subclasses 311+ for piezoelectric devices.
349Liquid Crystal Cells, Elements and Systems,   subclasses 37 , 49, and 172+ for light control in ferroelectric liquid crystal devices.
359Optical: Systems and Elements,   subclasses 245+ for light control with ferroelectric devices and subclasses 484.01 through 484.1 for polarization using ferroelectric devices.
361Electricity: Electrical Systems and Devices,   subclasses 321.1+ for ferroelectric capacitors, per se.
  
[List of Patents for class 365 subclass 146]    146Electrets:
 This subclass is indented under subclass 129.  Subject matter in which the storage medium is an electret, that is, an element which exhibits a permanent external electrostatic field due to internal polarization.

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145,for ferroelectric storage systems.
147,for persistent internal polarization devices.

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307Electrical Transmission or Interconnection Systems,   subclass 400 for electrets used in saturable reactor systems.
  
[List of Patents for class 365 subclass 147]    147Persistent internal polarization (PIP):
 This subclass is indented under subclass 129.  Subject matter in which storage is effected and information is represented by the persistent internal polarization by an established electric field in a photoconductive dielectric medium, i.e., photoelectret.

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355Photocopying,   subclasses 3+ for electric photography.
430Radiation Imagery Chemistry: Process, Composition, or Product Thereof,   subclasses 31+ for elements of electrical photography and radiation sensitive conductive compositions.
  
[List of Patents for class 365 subclass 148]    148Resistive:
 This subclass is indented under subclass 129.  Subject matter in which the storage element is an electrically resistive member.

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100,for semipermanent resistor memories.
112,for optically controlled resistive devices, i.e., photoconductors.
160,for magnetically controlled resistive devices, i.e., superconductors.

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250Radiant Energy,   subclasses 200+ for photocell devices.
338Electrical Resistors,   subclasses 13+ for resistance value responsive to a condition, subclass 32 for superconductors.
  
[List of Patents for class 365 subclass 149]    149Capacitors:
 This subclass is indented under subclass 129.  Subject matter in which the storage element is a capacitative device.

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102,for semipermanent capacitor memories.

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307Electrical Transmission or Interconnection Systems,   subclass 108 for pulse generators using a capacitor and subclasses 109 and 110 for other capacitor circuits storing energy.
320Electricity: Battery or Capacitor Charging or Discharging,   subclasses 166+ for capacitor charging or discharging, per se.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses for miscellaneous circuits utilizing a capacitive storage element.
361Electricity: Electrical Systems and Devices,   subclasses 271+ for capacitors, per se, subclasses 500+ for electrolytic capacitors, systems and devices.
  
[List of Patents for class 365 subclass 150]    150Inherent:
 This subclass is indented under subclass 149.  Subject matter wherein the capacitor is the inherent capacitance of a circuit element.
  
[List of Patents for class 365 subclass 151]    151Molecular or atomic:
 This subclass is indented under subclass 129.  Subject matter in which information is stored at a molecular, atomic, a subatomic level, or arrangement.

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119,for color centers (photochromatic material).
  
[List of Patents for class 365 subclass 152]    152Nuclear induction or spin echo:
 This subclass is indented under subclass 151.  Subject matter which exploits nuclear induction spin echo capability for information storage and retrieval.
  
[List of Patents for class 365 subclass 153]    153Electrochemical:
 This subclass is indented under subclass 129.  Subject matter where an electrochemical material is used for the storage and retrieval of information.

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45,for analog electrochemical storage devices.

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29Metal Working,   subclass 25.03 for the manufacture of electrolytic type devices.
136Batteries: Thermoelectric and Photoelectric,   appropriate subclasses for producing electricity by electrochemical action.
204Chemistry: Electrical and Wave Energy,   appropriate subclasses for electrolytic devices utilized to produce chemical change, as for example, electroplating cells, and for analytical and control electrolytic devices, such as pH cells.
252Compositions,   subclass 62.2 for electrolytes for electrical devices, and subclass 62.3 for barrier layer device compositions.
314Electric Lamp and Discharge Devices, Consumable Electrodes,   subclass 132 for arc lamps having electrolytic resistances.
320Electricity: Battery or Capacitor Charging or Discharging,   appropriate subclass for charging or discharging an electrolytic capacitor or an electrolytic cell.
322Electricity: Single Generator Systems,   subclass 79 for the control of the generator circuit by the use of electrolytic impedances.
324Electricity: Measuring and Testing,   subclasses 425+ for electrolytic testing systems, such as pH measuring systems.
329Demodulators,   appropriate subclasses for electrolytic type demodulators.
338Electrical Resistors,   subclasses 80+ for mechanically variable liquid resistors, and subclass 222 for fixed value liquid resistors.
361Electricity: Electrical Systems and Devices,   subclasses 500+ for electrolytic systems and devices.
363Electric Power Conversion Systems,   subclass 140 for rectifying systems utilizing electrolytic rectifiers.
  
[List of Patents for class 365 subclass 154]    154Flip-flop (electrical):
 This subclass is indented under subclass 129.  Subject matter in which the storage element is an electrical bistable multivibrator.

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72,for flip-flop systems having significant interconnection arrangements.
190,for read/write circuit which uses a complementary information storage cell.
204,for flip-flops used for sensing information.

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307Electrical Transmission or Interconnection Systems,   subclass 406 for magnetic flip-flop devices.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 185+ for miscellaneous flip-flop circuits.
  
[List of Patents for class 365 subclass 155]    155Plural emitter or collector:
 This subclass is indented under subclass 154.  Subject matter in which the flip-flop is made up of solid-state devices which have plural emitters or plural collectors.

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179,for a memory system using plural emitter or collector device as a semiconductive storage element (nonflip-flop).

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses for active solid-state devices having multiple/plural emitters or collectors, especially subclasses 164 through 166and 560-564.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 577 and 578 for miscellaneous transistor circuits having multiple collectors or emitters.
  
[List of Patents for class 365 subclass 156]    156Complementary:
 This subclass is indented under subclass 154.  Subject matter employing devices having complementary (pnp and npn) conductivity components.

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181,for a memory system using complementary conductivity semiconductive device as a storage element (nonflip-flop).

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326Electronic Digital Logic Circuitry,   appropriate subclasses for logic circuits utilizing complementary FET devices.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 214 , 484+, and 576 for miscellaneous circuits utilizing complementary transistors.
  
[List of Patents for class 365 subclass 157]    157Magnetostrictive or piezoelectric:
 This subclass is indented under subclass 129.  Subject matter in which the storage element is magnetostrictive or piezoelectric, that is, the shrinkage or expansion of a material when placed in a magnetic or electric field, respectively.

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76+,for recirculation stores using magnetostrictive or piezoelectric delay lines.

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310Electrical Generator or Motor Structure,   subclasses 311+ for piezoelectric devices.
333Wave Transmission Lines and Networks,   subclasses 138+ for delay networks which use a magnetostrictive device.
335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclass 215 for magnetostrictive type devices.
  
[List of Patents for class 365 subclass 158]    158Magnetoresistive:
 This subclass is indented under subclass 129.  Subject matter in which the storage element changes in electrical conductivity when a magnetic field is applied.

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338Electrical Resistors,   subclasses 32+ for magnetoresistive devices, per se.
  
[List of Patents for class 365 subclass 159]    159Negative resistance:
 This subclass is indented under subclass 129.  Subject matter in which the storage element exhibits negative resistance.

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71,for negative resistance interconnection arrangements.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   particularly subclasses 568+ for miscellaneous negative resistance device circuits.
  
[List of Patents for class 365 subclass 160]    160Superconductive:
 This subclass is indented under subclass 129.  Subject matter in which the storage element is superconductive in that it has a finite electrical resistance at particular (usually normal) temperatures and magnetic field strength and zero resistance at (usually) cryogenic temperatures and low field strengths, the change of resistance or presence or absence of current in the superconductor being used to signify information.

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326Electronic Digital Logic Circuitry,   subclasses 1+ for superconductive logic circuits.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 186+ and 527+ for miscellaneous circuits utilizing superconducting elements.
335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclass 216 for superconductive type magnetic devices.
338Electrical Resistors,   subclasses 32+ for superconductors, per se.
  
[List of Patents for class 365 subclass 161]    161Thin film:
 This subclass is indented under subclass 160.  Subject matter in which the superconductor is in addition a thin film device.
  
[List of Patents for class 365 subclass 162]    162Josephson:
 This subclass is indented under subclass 160.  Subject matter in which information is stored as a function of tunneling in a Josephson junction.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 31 through 36for Josephson devices, per se.
  
[List of Patents for class 365 subclass 163]    163Amorphous (electrical):
 This subclass is indented under subclass 129.  Subject matter in which information is stored as a function of the electrical condition of an amorphous material.

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113,for amorphous which are effected by radiant energy.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 2 through 5,16, 49+, especially 52-63, 646 and 650 for amorphous material devices.
  
[List of Patents for class 365 subclass 164]    164Electrical contacts:
 This subclass is indented under subclass 129.  Subject matter in which information is stored as a function of the condition (e.g., presence or absence, opened or closed) of electrical contacts.

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74Machine Element or Mechanism,   subclass 568 for memory devices using contacts activated by cams.
  
[List of Patents for class 365 subclass 165]    165Coherer:
 This subclass is indented under subclass 164.  Subject matter where storage device contacts are embedded in a cohere material which is responsive to a current or pressure by a physical change (usually from a solid coherent mass to a powder) which effects a change in the material resistance.

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338Electrical Resistors,   appropriate subclass for coherer devices, per se.
  
[List of Patents for class 365 subclass 166]    166Relay:
 This subclass is indented under subclass 164.  Subject matter in which the storage element is one or more relays.

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335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   appropriate subclass for relay devices, per se.
361Electricity: Electrical Systems and Devices,   subclasses 160+ for electric relay circuits.
  
[List of Patents for class 365 subclass 167]    167Simulating biological cells:
 This subclass is indented under subclass 129.  Subject matter in which information is stored in a device which simulates the function of a living nerve cell.

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706Data Processing: Artificial Intelligence,   subclass 44 for simulating operational functions of living nerve cells.
  
[List of Patents for class 365 subclass 168]    168Ternary:
 This subclass is indented under subclass 129.  Subject matter which uses storage cells having three stable states.
  
[List of Patents for class 365 subclass 169]    169Gunn effect:
 This subclass is indented under subclass 129.  Subject matter in which the storage element is an electrical shock wave responsive or generative device.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 6 through 8for Gunn effect oscillators.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses for miscellaneous circuitry employing Gunn effect devices.
331Oscillators,   subclass 107 for Gunn effect oscillators.
  
[List of Patents for class 365 subclass 170]    170Hall effect:
 This subclass is indented under subclass 129.  Subject matter in which the storage element or a component of the storage element exhibits Hall effect characteristics.

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324Electricity: Measuring and Testing,   subclass 45 for determining the characteristics of a magnetic field utilizing the Hall effect.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclass 187 for a stable state circuit with a Hall element and subclass 511 for a miscellaneous circuit utilizing a Hall element.
329Demodulators,   appropriate subclasses for demodulating elements whose resistance or reactance changes in response to an applied magnetic field.
338Electrical Resistors,   subclass 32 for Hall effect devices.
  
[List of Patents for class 365 subclass 171]    171Magnetic thin film:
 This subclass is indented under subclass 129.  Subject matter where the storage element is a thin film cell which has a thickness of approximately 1 to 12,000 angstroms.

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87,for magnetic shift registers which use thin film storage elements.

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307Electrical Transmission or Interconnection Systems,   subclass 403 for saturable reactor systems which use thin film components.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclass 567 for a miscellaneous circuit utilizing a thin film device.
  
[List of Patents for class 365 subclass 172]    172Isotropic:
 This subclass is indented under subclass 171.  Subject matter in which the thin film device has a plurality of easy axes of magnetization.
  
[List of Patents for class 365 subclass 173]    173Multiple magnetic storage layers:
 This subclass is indented under subclass 171.  Subject matter where information is stored in a plurality of magnetic layers within the thin film device.
(1) Note. Included within this subclass are thin film devices containing a storage layer and a read out layer.

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130,for three-dimensional magnetic storage devices where the adjacent layers are separate.
  
[List of Patents for class 365 subclass 174]    174Semiconductive:
 This subclass is indented under subclass 129.  Subject matter in which information is stored and retrieved from a semiconductive material.

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72,for transistor or diode interconnection arrangement.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses for active semiconductive material devices, per se.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses for miscellaneous nonlinear circuits utilizing semiconducting devices.
438Semiconductor Device Manufacturing: Process,   for methods of making semiconductor memory devices; see the search notes therein.
  
[List of Patents for class 365 subclass 175]    175Diodes:
 This subclass is indented under subclass 174.  Subject matter in which the semiconductor storage element is a diode.

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72,for transistor or diode interconnection arrangements.
105,for read only memory systems which use semiconductive diodes.
115,for radiant energy memory systems which use semiconductive diodes.
243,for current steering diodes in an addressing storage system.
  
[List of Patents for class 365 subclass 176]    176Silicon on sapphire (SOS):
 This subclass is indented under subclass 174.  Subject matter in which the storage element is silicon on sapphire material.
  
[List of Patents for class 365 subclass 177]    177Bipolar and FET:
 This subclass is indented under subclass 174.  Subject matter in which bipolar and field effect transistors are used together in a storage system.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 273 , 370 and 378 for combined bipolar and field effect devices.
  
[List of Patents for class 365 subclass 178]    178Ion implantation:
 This subclass is indented under subclass 174.  Subject matter in which the semiconductive storage member is subjected to modification by ion implantation.

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438Semiconductor Device Manufacturing: Process,   for methods of making semiconductor memory devices; see the search notes therein.
  
[List of Patents for class 365 subclass 179]    179Plural emitter or collector:
 This subclass is indented under subclass 174.  Subject matter in which the semiconductive storage element is either a plural emitter or a plural collector device.

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155,for flip-flop storage devices which use plural emitter or collector semiconductive materials.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses for active solid-state devices having multiple/plural emitters or collectors, especially subclasses 164 through 166and 560 through 564.
  
[List of Patents for class 365 subclass 180]    180Four layer devices:
 This subclass is indented under subclass 174.  Subject matter in which four layer devices are used (e.g., pnpn transistors).

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclasses 107 through 181for regenerative type devices.
326Electronic Digital Logic Circuitry,   appropriate subclasses for electronic logic circuits utilizing four or more layer devices.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses for miscellaneous circuits utilizing four or more layer devices.
  
[List of Patents for class 365 subclass 181]    181Complementary conductivity:
 This subclass is indented under subclass 174.  Subject matter in which the storage elements are of complementary conductivity (e.g., pnp plus npn).

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156,for flip-flop storage devices which use complementary elements.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses, including regenerative type devices in subclasses 107 through 181,bipolar devices in subclasses 565+, and field effect devices in subclasses 213+.
326Electronic Digital Logic Circuitry,   appropriate subclasses for logic circuits which utilize complementary transistors.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   particularly subclass 576 for miscellaneous circuits utilizing complementary transistors.
  
[List of Patents for class 365 subclass 182]    182Insulated gate devices:
 This subclass is indented under subclass 174.  Subject matter in which the storage element is an insulated gate device (e.g., FET).

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses, including subclasses 288 through 413for devices with an insulated electrode, including insulated gate electrode.
326Electronic Digital Logic Circuitry,   appropriate subclasses for logic circuits utilizing field-effect transistors.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   appropriate subclasses for miscellaneous circuits utilizing field-effect transistors.
  
[List of Patents for class 365 subclass 183]    183Charge coupled:
 This subclass is indented under subclass 182.  Subject matter in which the storage element is a charge coupled device.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   appropriate subclasses, including subclasses 215+ , for charge transfer type active semiconductor devices, per se.
377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclass 63 for charge-coupled devices used as pulse counters and shift registers.
  
[List of Patents for class 365 subclass 184]    184Variable threshold:
 This subclass is indented under subclass 182.  Subject matter in which the storage device is a FET transistor which has a variable threshold gate, e.g., MNOS.
  
[List of Patents for class 365 subclass 185.01]    185.01FLOATING GATE:
 This subclass is indented under the class definition.  Subject matter wherein a device stores and retrieves information from a conductive insulated gate that indefinitely holds an amount of charge having a specific polarity, and it is electrically insulated and isolated from other parts of the device.
(1) Note. A floating gate array usually has, at least, a second control gate that may be connected to the word (row address) line for the inducement of an operative control potential during operation.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclass 314 for a substructure floating gate memory device having a variable threshold (e.g., by storage of charge in an insulator layer adjacent to a channel).
  
[List of Patents for class 365 subclass 185.02]    185.02Disturbance control:
 Subject matter under 185.01 wherein a threshold shifting effect is minimized from erasing, reading, and/or programming of a specific memory cell on any adjacent memory cells in the floating gate array.
  
[List of Patents for class 365 subclass 185.03]    185.03Multiple values (e.g., analog):
 Subject matter under 185.01 wherein the floating gate device is adapted to store and operate on multiple-valued electrical data signals.

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45,for analog data signals, per se.
168,for nonfloating gate device adapted to store and operate on multiple-valued electrical data signals.
  
[List of Patents for class 365 subclass 185.04]    185.04Data security:
 Subject matter under 185.01 wherein the floating gate device has an ability to secure or permanently preserve electric data signals from being erased (e.g., by tampering or overwriting) from memory cells.
(1) Note. For example, this subject matter may include either an integral light shield to prevent memory cells from being erased or circuit fuses which may secure the data.

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185.32,for radiation erasure details.

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380Cryptography,   subclass 4 for digital data protection, per se.
705Data Processing: Financial, Business Practice, Management, or Cost/Price Determination,   subclasses 51 through 54for usage protection of a distributed data file.
726Information Security,   subclasses 1 through 30for information security in computers or digital processing system.
  
[List of Patents for class 365 subclass 185.05]    185.05Particular connection:
 Subject matter under 185.01 wherein the floating gate device is enabled to form a connection or perform a switchable function.
(1) Note. For example, this subject matter may include a particular decoder.

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64,for an innerconnection arrangement, per se.
189.08,for an array capable of performing specified logic functions.

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326Electronic Digital Logic Circuitry,   subclasses 37+ for multifunction or programmable connection.
340Communications: Electrical,   subclasses 14.3 through 14.31for programmable decoder matrix connection.
  
[List of Patents for class 365 subclass 185.06]    185.06Segregated columns:
 Subject matter under 185.05 wherein the connection within the floating gate device has separate source and drain lines for each column of memory cells, thereby each column’s source and drain lines are separate from and not shared with any other column’s source and drain lines.
  
[List of Patents for class 365 subclass 185.07]    185.07Cross-coupled cell:
 Subject matter under 185.05 wherein one or more floating gate elements are directly wired in a cross-coupled circuit.
(1) Note. The floating gate element may function, for example, as a switch or a load element.
(2) Note. Floating gate arrays that interact with and are connected through data/bit lines to a separate cross-coupled volatile static ram cell are not classified herein; for this subject matter see SEARCH THIS CLASS, SUBCLASS below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

185.08,for floating gate elements that interact with and are connected through data/bit lines to a separate cross-coupled volatile static ram cell.
  
[List of Patents for class 365 subclass 185.08]    185.08With volatile signal storage device:
 Subject matter under 185.05 wherein the floating gate device is directly connected to exchange a signal between a separate volatile signal storage device and itself.
(1) Note. For example, this subject matter may include a separate volatile capacitor, a separate volatile SRAM cell, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

154,for storage elements that are electrical bistable multivibrators (i.e., flip-flops).
156,for employing devices having complementary (pnp and npn) conductivity components.
228,for data preservation.
  
[List of Patents for class 365 subclass 185.09]    185.09Error correction (e.g., redundancy, endurance):
 Subject matter under 185.05 wherein the floating gate device has a provision for the substitution of dysfunctional ("bad") cells, either initially or from "wear-out" of an element or array, or for prevention of the generation of bad cells.
(1) Note. This subject matter includes means for increasing the "endurance" of an array.

SEE OR SEARCH CLASS:

714Error Detection/Correction and Fault Detection/Recovery,   appropriate subclasses.
  
[List of Patents for class 365 subclass 185.1]    185.1Extended floating gate:
 Subject matter under 185.05 wherein two or more spatially separated floating gate elements are connected by a common, extended floating gate.
(1) Note. For example, programming means in the substrate that are spatially separated from the main floating gate transistor or a CMOS transistor pair share the same floating gate.
  
[List of Patents for class 365 subclass 185.11]    185.11Bank or block architecture:
 Subject matter under 185.05 wherein a floating gate array is divided into independently accessible groups of memory cells.
(1) Note. Banks of memory cells (e.g., blocks) may be separated through physical layout, particular decoding means, particular wiring means, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

230.03,for addressing plural banks or blocks, per se.
  
[List of Patents for class 365 subclass 185.12]    185.12Parallel row lines (e.g., page mode):
 Subject matter under 185.11 wherein one of the source or drain lines in a floating gate array is parallel with the word (control gate) line of a particular row so as to form a row of accessible architecture.
(1) Note. A row of accessible architecture may be separately accessed from the other rows.
  
[List of Patents for class 365 subclass 185.13]    185.13Global word or bit lines:
 Subject matter under 185.11 wherein a word (control gate) line or a data bit (drain) line in a floating gate array extends through a plurality of banks or blocks to form a common connection or connections for at least a plurality of the banks or blocks of the entire floating gate array.
(1) Note. This subject matter includes memories where the floating gate array is the entire intact semiconductor wafer and such lines that extend across the entire wafer.
  
[List of Patents for class 365 subclass 185.14]    185.14Program gate:
 Subject matter under 185.05 wherein an additional insulated gate separate from the control gate provides programming or erase functions.
  
[List of Patents for class 365 subclass 185.15]    185.15Weak inversion injection:
 Subject matter under 185.14 wherein use of an auxiliary biased or floating gate to the source side of the main floating gate induces a weak channel thereunder so as to create a hot electron injection path in the channel for programming the main floating gate.
(1) Note. This subject matter does not include an electrode near the source which merely produces a standard channel inversion.
  
[List of Patents for class 365 subclass 185.16]    185.16Virtual ground:
 Subject matter under 185.05 wherein all of the memory cells in a column are connected in parallel by column lines, and alternative column lines are either connected to ground or switchable to a potential related to ground.
(1) Note. All of the internal columns of the memory cells in the floating gate array share a common column line with an adjacent column. Each internal column line is shared by two columns of cells to reduce the number and size of the connections.
  
[List of Patents for class 365 subclass 185.17]    185.17Logic connection (e.g., NAND string):
 Subject matter under 185.05 wherein the floating gate elements are connected in a manner so as to form a logical relationship.
(1) Note. For example, this subject matter includes a particular logic (inclusion or exclusion between two electrical signals) connection such as, but not limited to, a series connection of a plurality of floating gate arrays to form a (N)AND logic or a connection to form a (N)OR logic function. This subject matter specifically includes the "NAND string" memory architecture.

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326Electronic Digital Logic Circuitry,   subclasses 104+ for digital logic circuitry, per se.
  
[List of Patents for class 365 subclass 185.18]    185.18Particular biasing:
 Subject matter under 185.01 wherein an operating environment provides electrical settings to the floating gate device.
(1) Note. For example, particular biasing operations may include erasing, programming, testing, and/or reading.
  
[List of Patents for class 365 subclass 185.19]    185.19Multiple pulses (e.g., ramp):
 Subject matter under 185.18 wherein the floating gate has a particular biasing that comprises a series of pulses or a pulse that varies at a constant rate.
(1) Note. The biasing is to enable a particular function (e.g., programming, erasure, testing, verification, etc.).
  
[List of Patents for class 365 subclass 185.2]    185.2Reference signal (e.g., dummy cell):
 Subject matter under 185.18 wherein a data signal on the floating gate is compared to a threshold level or a fixed signal that acts as a constant for comparison to the data signal.
(1) Note. This subject matter includes reference voltage generation means for reading, programming, erasing, etc.

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210.1,for noise suppression by differential sensing using a reference or dummy elements.
  
[List of Patents for class 365 subclass 185.21]    185.21Sensing circuitry (e.g., current mirror):
 Subject matter under 185.2 wherein a detailed circuit arrangement compares a data signal to the reference signal and delivers a resulting output signal.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 51+ for particular structure of sensing amplifiers, per se.
  
[List of Patents for class 365 subclass 185.22]    185.22Verify signal:
 Subject matter under 185.2 including the use of any circuitry, procedure, or other means to verify that the data signal has been properly written or erased from a memory cell.
  
[List of Patents for class 365 subclass 185.23]    185.23Drive circuitry (e.g., word line driver):
 Subject matter under 185.18 including logic, power, and switching circuitry necessary to drive a word line or bit line of the floating gate device into any of its operational modes.
  
[List of Patents for class 365 subclass 185.24]    185.24Threshold setting (e.g., conditioning):
 Subject matter under 185.18 wherein a particular process or means is used in a floating gate device to set the threshold to a predetermined value during either programming or erasure.

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257Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),   subclass 314 for substructure floating gate memory device having a variable threshold (e.g., by storage of charge in an insulator layer adjacent a channel).
  
[List of Patents for class 365 subclass 185.25]    185.25Line charging (e.g., precharge, discharge, refresh):
 Subject matter under 185.18 wherein the floating gate device circuitry there is either a precharge, refresh, or a discharge of the bit lines.
  
[List of Patents for class 365 subclass 185.26]    185.26Floating electrode (e.g., source, control gate, drain):
 Subject matter under 185.18 wherein one or more of the source, control gate, drain, or substrate of a floating gate device is left floating rather than being tied to a potential.
  
[List of Patents for class 365 subclass 185.27]    185.27Substrate bias:
 Subject matter under 185.18 wherein the floating gate device has a particular and significant biasing applied to the substrate or isolated semiconductor well region.
(1) Note. This subject matter includes external potential connections and may include internal charge pumps.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclass 534 for particular substrate biasing arrangements.
  
[List of Patents for class 365 subclass 185.28]    185.28Tunnel programming:
 Subject matter under 185.18 wherein the floating gate device is programmed through a thin insulated region that provides a charge tunnel to the floating gate.
(1) Note. For specific hot carrier injection mechanism subject matter, see SEARCH THIS CLASS, SUBCLASS below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

185.15,for hot carrier injections by a weak inversion channel.
  
[List of Patents for class 365 subclass 185.29]    185.29Erase:
 Subject matter under 185.18 wherein an arrangement or process is provided for reducing the net charge on memory cells on the floating gate.
(1) Note. The convention of "removal of charges" (either positive or negative) from the floating gate to reduce the net charge thereon will be considered "erasure." "Erasure" need not be on a complete block or bank to be considered under this subject matter.
  
[List of Patents for class 365 subclass 185.3]    185.3Over erasure:
 Subject matter under 185.29 including the use of any circuitry or means to measure or prevent over erasure of memory cells (i.e., removal of more charge than is desired for a particular logic level setting).
  
[List of Patents for class 365 subclass 185.31]    185.31Nonsubstrate discharge:
 Subject matter under 185.29 wherein the floating gate is erased by overlying electrodes or other means not directly connected to the substrate, and the charge carriers are not directly removed to the substrate.
  
[List of Patents for class 365 subclass 185.32]    185.32Radiation erasure:
 Subject matter under 185.31 wherein electromagnetic wave energy is used to erase an electric charge on the floating gate.
(1) Note. Electromagnetic wave energy includes X-ray, gamma ray, ultra violet, etc.
  
[List of Patents for class 365 subclass 185.33]    185.33Flash:
 Subject matter under 185.29 wherein the floating gate is electrically erasable by block or bulk.
(1) Note. For Electrically Erasable Programmable Read Only Memory (EEPROM) to be considered flash memory, it must be erasable in blocks (e.g., erased as a whole or in a row or in banks).
  
[List of Patents for class 365 subclass 186]    186Single device per bit:
 This subclass is indented under subclass 174.  Subject matter in which the storage element for one bit of information is composed of a single semiconductive device.
  
[List of Patents for class 365 subclass 187]    187Three devices per bit:
 This subclass is indented under subclass 174.  Subject matter in which the storage element for one bit of information is composed of three semiconductive devices.
  
[List of Patents for class 365 subclass 188]    188Four or more devices per bit:
 This subclass is indented under subclass 174.  Subject matter in which the storage element for one bit of information is composed of four or more semiconductive devices.
  
[List of Patents for class 365 subclass 189.011]    189.011READ/WRITE CIRCUIT:
 This subclass is indented under the class definition.  Subject matter for inserting, extracting, or handling of an information signal to be stored (write circuit) or retrieved (read circuit).
  
[List of Patents for class 365 subclass 189.02]    189.02Multiplexing:
 This subclass is indented under subclass 189.011.  Subject matter which includes the transmission of plural signals over a single signal path.

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230.02,for multiplexing of static memory address signals.

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370Multiplex Communications,   subclasses 351+ for pathfinding or routing in multiplex communications which may include a static memory read and write circuit.
  
[List of Patents for class 365 subclass 189.03]    189.03Plural use of terminal:
 This subclass is indented under subclass 189.011.  Subject matter which has a terminal connecting the memory to a data handling circuit and another diverse circuit.
(1) Note. Such a diverse circuit may be an addressing, power or testing circuit.
(2) Note. Circuits having different signal levels for different functions are also found in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189.02,for multiplexing of data signals in a read/write memory circuit.
230.02,for multiplexing of address signals in a memory addressing circuit.
  
[List of Patents for class 365 subclass 189.04]    189.04Simultaneous operations (e.g., read/write):
 This subclass is indented under subclass 189.011.  Subject matter including circuitry for performing multiple operations (e.g., storing information in and retrieving information from the memory) at the same time.

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230.05,for an addressing circuit having plural address ports for independent access.

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370Multiplex Communications,   subclasses 276+ for duplex communications not limited to a static memory read and write circuit.
  
[List of Patents for class 365 subclass 189.05]    189.05Having particular data buffer or latch:
 This subclass is indented under subclass 189.011.  Subject matter including a specific detail of a temporary storage circuit for a data signal.

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205+,for a specific sense amplifier circuit in a memory system.
230.08,for a feature of an address buffer or latch.
  
[List of Patents for class 365 subclass 189.06]    189.06Including signal clamping:
 This subclass is indented under subclass 189.011.  Subject matter including circuitry for limiting the variation of a signal (e.g., voltage) in order to keep such variation at a predetermined level.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 309+ for miscellaneous clamping circuits.
  
[List of Patents for class 365 subclass 189.07]    189.07Including signal comparison:
 This subclass is indented under subclass 189.011.  Subject matter including circuitry to compare plural signal in order to control an operation of the system on a data signal.

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49.17,for a comparator in a content addressable memory.
205,and 206+, for comparison between stored data and a reference voltage or value.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 1+ for miscellaneous signal comparing circuits.
  
[List of Patents for class 365 subclass 189.08]    189.08Including specified plural element logic arrangement:
 This subclass is indented under subclass 189.011.  Subject matter describing the configuration of multiple logic devices which handle the information signal.

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326Electronic Digital Logic Circuitry,   appropriate subclasses for electronic digital logic circuitry.
  
[List of Patents for class 365 subclass 189.09]    189.09Including reference or bias voltage generator:
 This subclass is indented under subclass 189.011.  Subject matter including a particular voltage or bias source.

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210.1through 210.15 for an element used to generate reference voltage for a sense amplifier.

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323Electricity: Power Supply or Regulation Systems,   subclasses 311+ for a self-regulating reference or bias circuit.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 530+ for miscellaneous circuits having significant bias circuitry.
  
[List of Patents for class 365 subclass 189.11]    189.11Including level shift or pull-up circuit:
 This subclass is indented under subclass 189.011.  Subject matter including a circuit element which makes an adjustment in the voltage level of an information signal to enhance driving capability.

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326Electronic Digital Logic Circuitry,   subclasses 88 and 92 for logic circuits with bootstrapping.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 390 and 589 for miscellaneous circuits utilizing bootstrapping.
  
[List of Patents for class 365 subclass 189.12]    189.12With shift register:
 This subclass is indented under subclass 189.011.  Subject matter including a circuit which sequentially shifts the data information signal between one element and another in a memory array in a serial manner.

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78,for a plural shift register memory device.
219,and 221, for a serial memory device.
238,for memory addressing circuitry including a shift register.

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377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclasses 57 and 64 for structure or circuitry of a shift register, not limited to a static memory system.
  
[List of Patents for class 365 subclass 189.14]    189.14Common read and write circuit:
 This subclass is indented under subclass 189.011.  Subject matter including a circuit for controlling both reading and writing of data signal from/to a memory location.
  
[List of Patents for class 365 subclass 189.15]    189.15Particular read circuit:
 This subclass is indented under subclass 189.011.  Subject matter including a circuit for controlling reading of data signal from a memory location.
  
[List of Patents for class 365 subclass 189.16]    189.16Particular write circuit:
 This subclass is indented under subclass 189.011.  Subject matter including a circuit for controlling writing of data signal to a memory location.
  
[List of Patents for class 365 subclass 189.17]    189.17Data transfer circuit:
 This subclass is indented under subclass 189.011.  Subject matter including a circuit that connects between two storage locations (e.g., two memory arrays or memory blocks) for transferring data between them.
  
[List of Patents for class 365 subclass 189.18]    189.18Bidirectional bus:
 This subclass is indented under subclass 189.011.  Subject matter wherein data input/output lines are used for both reading and writing of data.
  
[List of Patents for class 365 subclass 189.19]    189.19Separate read and write bus:
 This subclass is indented under subclass 189.011.  Subject matter wherein each of read and write bus is unidirectional.
  
[List of Patents for class 365 subclass 189.2]    189.2Using different memory types:
 This subclass is indented under subclass 189.011.  Subject matter including a bus interface circuit between independent memory types (e.g., DRAM and SRAM).
  
[List of Patents for class 365 subclass 190]    190For complementary information:
 This subclass is indented under subclass 189.011.  Subject matter wherein the read/write circuit is used with a memory cell containing complementary information.

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204,for flip-flops used for sensing in a read/write circuit.
207,for differential sensing.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 545+ for miscellaneous bias circuits with signal protection or bias preservation.
  
[List of Patents for class 365 subclass 191]    191Signals:
 This subclass is indented under subclass 189.011.  Subject matter where particular signals are used for writing, maintaining, or reading information.

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230.01+,for addressing a particular memory.
  
[List of Patents for class 365 subclass 192]    192Radio frequency:
 This subclass is indented under subclass 191.  Subject matter where the particular signal is a radio frequency signal.
  
[List of Patents for class 365 subclass 193]    193Strobe:
 This subclass is indented under subclass 191.  Subject matter where the particular signal is used for strobing the memory device.
  
[List of Patents for class 365 subclass 194]    194Delay:
 This subclass is indented under subclass 191.  Subject matter where the particular signal is delayed during writing or reading.

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76,for recirculation stores used as delay lines.
93,for magnetic shift registers including delay means.
  
[List of Patents for class 365 subclass 195]    195Inhibit:
 This subclass is indented under subclass 191.  Subject matter where an inhibit operation is used to prevent the writing or reading of information.
  
[List of Patents for class 365 subclass 196]    196Sense/inhibit:
 This subclass is indented under subclass 195.  Subject matter where the same conductor is used for both an inhibit operation and a sensing operation during different time periods.
  
[List of Patents for class 365 subclass 197]    197Microwave:
 This subclass is indented under subclass 191.  Subject matter where the particular signal is in the microwave range.
  
[List of Patents for class 365 subclass 198]    198Transmission:
 This subclass is indented under subclass 191.  Subject matter where transmission line signals and principles are used for writing or reading information.

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333Wave Transmission Lines and Networks,   subclass 12 for nonstorage of information.
  
[List of Patents for class 365 subclass 199]    199Coincident A.C. signal with pulse:
 This subclass is indented under subclass 191.  Subject matter where the particular signal is the combination of an A.C. signal and pulse signal.
  
[List of Patents for class 365 subclass 200]    200Bad bit:
 This subclass is indented under subclass 189.011.  Subject matter in which erroneous, defective, or partially defective storage locations are used to store information.

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714Error Detection/Correction and Fault Detection/Recovery,   subclasses 5.1 through 6.32for memory or peripheral subsystem affected recovery, subclass 42 for memory or storage device component fault, subclass 54 for storage content error reliability testing in digital data processing systems, subclasses 710 and 711 for fault recovery of a memory system, subclasses 718-723 for diagnostic testing of a memory system, and subclasses 763-773 for digital data error correction during memory access.
  
[List of Patents for class 365 subclass 201]    201Testing:
 This subclass is indented under subclass 189.011.  Subject matter including the specifics of the memory which are tested for defects or erroneous information.

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200,where defective memory devices are used to store information.

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324Electricity: Measuring and Testing,   subclass 34 for testing of magnetic properties.
714Error Detection/Correction and Fault Detection/Recovery,   subclasses 5.1 through 6.32for memory or peripheral subsystem affected recovery, subclass 42 for memory or storage device component fault, subclass 54 for storage content error reliability testing in digital data processing systems, and subclasses 718-723 for diagnostic testing of a memory system.
  
[List of Patents for class 365 subclass 202]    202Complementing/balancing:
 This subclass is indented under subclass 189.011.  Subject matter in which complementing or balancing signals are used in a read/write circuit, e.g., a storage system having an auxiliary storage circuit for complementary signals to be used for noise cancellation.

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333Wave Transmission Lines and Networks,   subclass 4 for plural channel systems with balanced circuits, subclass 25 for coupling networks with balanced circuits.
  
[List of Patents for class 365 subclass 203]    203Precharge:
 This subclass is indented under subclass 189.011.  Subject matter wherein circuit lines or elements are charged (or discharged) to a desired level just prior to reading or writing information.

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149,and 150, for information stored in the form of a charge.

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307Electrical Transmission or Interconnection Systems,   subclass 109 for miscellaneous transmission or interconnection capacitor circuits.
320Electricity: Battery or Capacitor Charging or Discharging,   subclasses 166+ for capacitor charging or discharging, per se.
  
[List of Patents for class 365 subclass 204]    204Accelerating charge or discharge:
 This subclass is indented under subclass 189.011.  Subject matter wherein a circuit senses a charging (or discharging) operation and switches in a parallel path to decrease the charging (or discharging) time.

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149,and 150, for charging and discharging information stores.
203,for precharging circuit lines or elements.

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307Electrical Transmission or Interconnection Systems,   subclass 109 for miscellaneous transmission or interconnection capacitor circuits.
320Electricity: Battery or Capacitor Charging or Discharging,   subclasses 166+ for capacitor charging or discharging, per se.
  
[List of Patents for class 365 subclass 205]    205Flip-flop used for sensing:
 This subclass is indented under subclass 189.011.  Subject matter wherein the sensing circuit is a flip-flop circuit.

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154,for flip-flop used as storage elements in a memory system.
190,for read/write circuits used in a memory system that contains flip-flop storage elements.
207,for differential sensing.

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327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 185+ and particularly subclasses 199+ for miscellaneous flip-flop circuits.
  
[List of Patents for class 365 subclass 206]    206Noise suppression:
 This subclass is indented under subclass 189.011.  Subject matter having circuits for the cancellation or reduction of noise or spurious signals.
  
[List of Patents for class 365 subclass 207]    207Differential sensing:
 This subclass is indented under subclass 189.011.  Subject matter includes a circuit for detecting the difference between two voltage or current levels.
  
[List of Patents for class 365 subclass 208]    208Semiconductors:
 This subclass is indented under subclass 207.  Subject matter where the differential sensing is performed upon a semiconductor memory element.
  
[List of Patents for class 365 subclass 209]    209Magnetic:
 This subclass is indented under subclass 207.  Subject matter where the differential sensing is performed upon a magnetic memory element.
  
[List of Patents for class 365 subclass 210.1]    210.1Reference or dummy element:
 This subclass is indented under subclass 207.  Subject matter including an additional cell that is used as a reference during the differential sensing.
  
[List of Patents for class 365 subclass 210.11]    210.11Compensate signal:
 This subclass is indented under subclass 210.1.  Subject matter wherein the output signal from an additional (reference) circuit is used to offset undesired voltage variations.
  
[List of Patents for class 365 subclass 210.12]    210.12Voltage setting:
 This subclass is indented under subclass 210.1.  Subject matter wherein a reference voltage is selected according to storage levels or operation modes.
  
[List of Patents for class 365 subclass 210.13]    210.13Common bit line:
 This subclass is indented under subclass 210.1.  Subject matter wherein a reference cell shares the same bit/data line with a storage element.
  
[List of Patents for class 365 subclass 210.14]    210.14Plural elements per reference cell:
 This subclass is indented under subclass 210.1.  Subject matter wherein a reference cell has more than one electronic components (e.g., containing a combination of transistors, capacitors, resistors, fuse, etc.).
  
[List of Patents for class 365 subclass 210.15]    210.15Structural component of a reference cell:
 This subclass is indented under subclass 210.1.  Subject matter including the structure of the electronic component (e.g., transistor, resistor, capacitor, fuse, etc.) that makes up a reference cell.
  
[List of Patents for class 365 subclass 211]    211Temperature compensation:
 This subclass is indented under subclass 206.  Subject matter where the circuit used is for compensating temperature changes.
  
[List of Patents for class 365 subclass 212]    212Semiconductor:
 This subclass is indented under subclass 211.  Subject matter where the temperature compensation is performed upon a semiconductor memory element.
  
[List of Patents for class 365 subclass 213]    213Magnetic:
 This subclass is indented under subclass 211.  Subject matter where the temperature compensation is performed upon a magnetic memory element.
  
[List of Patents for class 365 subclass 214]    214Particular wiring:
 This subclass is indented under subclass 206.  Subject matter where the circuit includes wiring the elements in a particular arrangement to obtain noise cancellation.

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63,which may or may not include noise cancellation.
  
[List of Patents for class 365 subclass 215]    215Optical:
 This subclass is indented under subclass 189.011.  Subject matter in which the read/write circuit if for an optical storage system.

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106+,for radiant energy information storage.
120+,for information masking in an optical storage system.
  
[List of Patents for class 365 subclass 216]    216Holographic:
 This subclass is indented under subclass 215.  Subject matter wherein the circuit is used to read/write holographic memories.

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125,for information masking which uses holograms.

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235Registers,   subclass 457 for holographic card readers.
359Optical: Systems and Elements,   subclasses 1+ for storage systems where there is a holographic storage medium storing information signal absent any electrical circuitry.
  
[List of Patents for class 365 subclass 217]    217Electron beam:
 This subclass is indented under subclass 189.011.  Subject matter in which the read/write circuit is for an electron beam storage system.

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237,for addressing a memory with an electron beam.
  
[List of Patents for class 365 subclass 218]    218Erase:
 This subclass is indented under subclass 189.011.  Subject matter in which the read/write circuit is or includes an erase circuit for a storage system.
  
[List of Patents for class 365 subclass 219]    219SiPo/PiSo:
 This subclass is indented under subclass 189.011.  Subject matter in which the read/write circuit for memory provides Serial Input with Parallel Output or Parallel Input with Serial Output.

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238,for Cartesian memories in which all of the above concepts may be present.

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340Communications: Electrical,   subclasses 14.1 through 14.69for logic and switching circuits having a decoder matrix form with various input/output capability.
  
[List of Patents for class 365 subclass 220]    220Parallel read/write:
 This subclass is indented under subclass 189.011.  Subject matter wherein information is written into a memory in parallel form and read out in parallel form.

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235,for addressing optical memory locations simultaneously.
  
[List of Patents for class 365 subclass 221]    221Serial read/write:
 This subclass is indented under subclass 189.011.  Subject matter wherein information is written into a memory in serial form and read out in serial form.

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73+,for recirculation memories which are usually read and written in this manner.
  
[List of Patents for class 365 subclass 222]    222Data refresh:
 This subclass is indented under subclass 189.011.  Subject matter wherein decaying information is read before it becomes unrecognizable, and rewritten in original form, e.g., charge on a capacitor is read before too much has leaked off, then rewritten to a fully charged state.

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149,for capacitor stores which require refresh.
183,for charge coupled stores which require refresh.
  
[List of Patents for class 365 subclass 223]    223Bridge:
 This subclass is indented under subclass 189.011.  Subject matter where the sensing circuit is in the form of a bridge circuit.

SEE OR SEARCH CLASS:

323Electricity: Power Supply or Regulation Systems,   subclass 365 for bridge arrangement used in electric storage discharge device.
324Electricity: Measuring and Testing,   subclass 98 for balancing bridge electricity.
333Wave Transmission Lines and Networks,   appropriate subclass for bridge type networks.
  
[List of Patents for class 365 subclass 224]    224Eddy current:
 This subclass is indented under subclass 189.011.  Subject matter having circuits containing Eddy currents.

SEE OR SEARCH CLASS:

324Electricity: Measuring and Testing,   subclass 40 for measuring Eddy currents.
  
[List of Patents for class 365 subclass 225]    225Minor loop:
 This subclass is indented under subclass 189.011.  Subject matter where the read/write circuit results in the operation of a magnetic memory element or any hysteresis loop other than the major loop.
(1) Note. Excluded are circuits which contain a multiaperture magnetic memory element.
  
[List of Patents for class 365 subclass 225.5]    225.5Including magnetic element:
 This subclass is indented under subclass 189.011.  Subject matter including a semiconductor element having plural potential barriers (i.e., junctions).

SEE OR SEARCH THIS CLASS, SUBCLASS:

230.07,for an address decoder circuit having a magnetic element.
243.5,for a memory address selection circuit having a magnetic element.

SEE OR SEARCH CLASS:

307Electrical Transmission or Interconnection Systems,   subclasses 401+ for a nonlinear reactor system.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 190+ for a stable state circuit with transformer or saturable core device.
336Inductor Devices,   appropriate subclasses for structure of a magnetic circuit element.
  
[List of Patents for class 365 subclass 225.6]    225.6Having bipolar circuit element:
 This subclass is indented under subclass 189.011.  Subject matter including a semiconductor element having plural potential barriers (i.e., junctions).
(1) Note. Circuits with only named bipolar devices are included in this subclass.

SEE OR SEARCH CLASS:

326Electronic Digital Logic Circuitry,   appropriate subclasses for logic circuits utilizing bipolar devices.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 574+ for miscellaneous circuits utilizing bipolar transistors.
  
[List of Patents for class 365 subclass 225.7]    225.7Having fuse element:
 This subclass is indented under subclass 189.011.  Subject matter wherein the circuit includes a circuit element which is selectively melted or disintegrated to make or break an electric circuit to control the operating characteristics of a memory read or write circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

96,for a memory system including data storage by a fusible memory element.
200,for a memory system including a redundant or spare element and having a fuse circuit which selectively activates or deactivates certain circuit elements.

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326Electronic Digital Logic Circuitry,   subclasses 37+ for a programmable logic circuit.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclass 525 for a miscellaneous circuit with a fusible link.
340Communications: Electrical,   subclass 14.31 for a decoder matrix having programmable fusible elements.
438Semiconductor Device Manufacturing: Process,   particularly subclasses 467, 600, and 601 for methods of altering the conductivity of a fuse or antifuse element associated with a semiconductor integrated circuit.
  
[List of Patents for class 365 subclass 226]    226POWERING:
 This subclass is indented under the class definition.  Subject matter having powering concepts relating to memories.
(1) Note. This class excludes power supplies, per se, which may be used for a memory system. See Classes 307, 327, 330, and 363 for power supplies.
  
[List of Patents for class 365 subclass 227]    227Conservation of power:
 This subclass is indented under subclass 226.  Subject matter having means for reduction of operational power during the memory standby phase.
  
[List of Patents for class 365 subclass 228]    228Data preservation:
 This subclass is indented under subclass 226.  Subject matter which includes concepts relevant to prevention of loss of data in a storage device, e.g., prevention of data loss by provision of backup storage means.

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714Error Detection/Correction and Fault Detection/Recovery,   subclasses 710+ for fault recovery of a memory system and subclasses 718+ for diagnostic testing of a memory system.
  
[List of Patents for class 365 subclass 229]    229Standby power:
 This subclass is indented under subclass 228.  Subject matter in which data loss is prevented by using a secondary (standby) power supply during housepower interruptions.
  
[List of Patents for class 365 subclass 230.01]    230.01ADDRESSING:
 This subclass is indented under the class definition.  Subject matter including selection of a memory location.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189.011,for the reading or writing of information in a memory system.

SEE OR SEARCH CLASS:

326Electronic Digital Logic Circuitry,   subclasses 105+ for digital logic decoding circuits, in general, and subclasses 62+ for buffer arrangements which convert logic signals between diverse logic devices broadly described as addressing electrical memory stores, but not including specific circuitry to store information in, or retrieve information from, a memory.
340Communications: Electrical,   subclasses 2.2 through 2.31for a channel selecting matrix and subclasses 14.1-14.69 for a decoder matrix.
370Multiplex Communications,   appropriate subclasses for multiplex switching techniques similar to addressing or the handling of memory information signals.
711Electrical Computers and Digital Processing Systems: Memory,   subclasses 1+ for addressing combined with specific memory configurations (e.g., extended, expanded, dynamic, etc.) in a digital data processing system, subclasses 100+ for generalized address forming in a digital data processing system, and subclasses 200+ for generalized storage accessing and control in a digital data processing system.
  
[List of Patents for class 365 subclass 230.02]    230.02Multiplexing:
 This subclass is indented under subclass 230.01.  Subject matter which includes the transmission of plural signals over a single signal path.

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189.02,in which the data signal rather than the address signal is multiplexed.

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370Multiplex Communications,   subclasses 351+ for pathfinding or routing in multiplex communications not limited to a static memory addressing circuit.
  
[List of Patents for class 365 subclass 230.03]    230.03Plural blocks or banks:
 This subclass is indented under subclass 230.01.  Subject matter in which the memory elements are arranged in plural separate and distinct groups and in which at least one element from one of the groups is selectively accessed.

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711Electrical Computers and Digital Processing Systems: Memory,   subclass 2 for extended/expanded memory addressing, subclass 5 for multiple memory module static memory addressing in a digital data processing system, subclasses 101+ for storage accessing and control combined with specific memory configurations (e.g., ROM, RAM, core, CAM, DASD, bubble, dynamic, etc.) in a digital data processing system, subclasses 117+ for generalized storage accessing and control of hierarchical memory arrangements in a digital data processing system, subclasses 147+ for shared memory storage accessing and control in a digital data processing system, and subclasses 200+ for generalized address forming in a digital data processing system.
  
[List of Patents for class 365 subclass 230.04]    230.04Alternate addressing (e.g., even/odd):
 This subclass is indented under subclass 230.03.  Subject matter which successively addresses memory elements in different blocks or banks.
  
[List of Patents for class 365 subclass 230.05]    230.05Multiple port access:
 This subclass is indented under subclass 230.01.  Subject matter having plural address circuits for independent memory access.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189.04,for memory circuits in which two or more operations (e.g., read and write) are performed simultaneously.
  
[List of Patents for class 365 subclass 230.06]    230.06Particular decoder or driver circuit:
 This subclass is indented under subclass 230.01.  Subject matter including a detail of a circuit which either changes a binary combination of memory address signals to form a selection or actuation signal, or which increases the magnitude of such an actuation signal.
(1) Note. Mere naming of a decoder or driver circuit is not, of itself, basis for classification in this subclass.

SEE OR SEARCH CLASS:

326Electronic Digital Logic Circuitry,   subclasses 105+ for this subject matter not limited to a memory system.
  
[List of Patents for class 365 subclass 230.07]    230.07Including magnetic element:
 This subclass is indented under subclass 230.06.  Subject matter in which a memory decoder or driver circuit includes a magnetic element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

225.5,for a read/write circuit having a magnetic element.
243.5,for a memory address selection circuit having a magnetic element.

SEE OR SEARCH CLASS:

307Electrical Transmission or Interconnection Systems,   subclasses 401+ for a nonlinear reactor system.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 190+ for a stable state circuit utilizing a transformer or saturable core device.
336Inductor Devices,   appropriate subclasses for structure of a magnetic circuit element.
  
[List of Patents for class 365 subclass 230.08]    230.08Including particular address buffer or latch circuit arrangement:
 This subclass is indented under subclass 230.01.  Subject matter including a detail of a temporary storage device for an address and selection signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

189.05,for a feature of a data buffer or latch, which may be combined with an address buffer or latch.
  
[List of Patents for class 365 subclass 230.09]    230.09Combined random and sequential addressing:
 This subclass is indented under subclass 230.01.  Subject matter including switching to permit the access to the storage elements either selectively or successively.
  
[List of Patents for class 365 subclass 231]    231Using selective matrix:
 This subclass is indented under subclass 230.01.  Subject matter where at least a single matrix is used to select a memory location.

SEE OR SEARCH CLASS:

340Communications: Electrical,   subclasses 2.2 through 2.31for a channel selecting matrix and subclasses 14.1-14.69 for a decoder matrix.
  
[List of Patents for class 365 subclass 232]    232Magnetic:
 This subclass is indented under subclass 231.  Subject matter where the elements of the selective matrix are magnetic.
  
[List of Patents for class 365 subclass 233.1]    233.1Sync/clocking:
 This subclass is indented under subclass 230.01.  This subclass is intended Subject matter where a circuit that generates a clock signal for controlling a memory cell and/or a circuit that makes a clock cycle occurring in a predetermined time sequence or in phase, is used to select a memory location.
  
[List of Patents for class 365 subclass 233.11]    233.11Plural clock signals:
 This subclass is indented under subclass 233.1.  Subject matter where there are two or more clock signals.
  
[List of Patents for class 365 subclass 233.12]    233.12External clock signal modification:
 This subclass is indented under subclass 233.1.  Subject matter wherein an external clock signal is adjusted.
  
[List of Patents for class 365 subclass 233.13]    233.13DDR (double data rate) memory:
 This subclass is indented under subclass 233.1.  Subject matter wherein a data memory reads or writes on a low to high transition of a clock signal and an opposite transition.
  
[List of Patents for class 365 subclass 233.14]    233.14Initiating signal:
 This subclass is indented under subclass 233.1.  Subject matter wherein a signal is used for activating an operational mode.
  
[List of Patents for class 365 subclass 233.15]    233.15Standby signal:
 This subclass is indented under subclass 233.1.  Subject matter wherein a clock signal is used for initiating a pause or power down mode.
  
[List of Patents for class 365 subclass 233.16]    233.16Write mode signal only:
 This subclass is indented under subclass 233.1.  Subject matter wherein a clock signal is used to control or start a write operation only.
  
[List of Patents for class 365 subclass 233.17]    233.17Read mode signal only:
 This subclass is indented under subclass 233.1.  Subject matter wherein a clock signal is used to control or start a read operation only.
  
[List of Patents for class 365 subclass 233.18]    233.18Burst mode signal:
 This subclass is indented under subclass 233.1.  Subject matter a clock signal is used for transferring a group of data.
  
[List of Patents for class 365 subclass 233.19]    233.19Common read and write mode signal:
 This subclass is indented under subclass 233.1.  Subject matter wherein a clock signal is used to control or start both read and write operation.
  
[List of Patents for class 365 subclass 233.5]    233.5Transition detection:
 This subclass is indented under subclass 233.1.  Subject matter which generates a clock or timing signal responsive to a change in an input signal.
  
[List of Patents for class 365 subclass 234]    234Optical:
 This subclass is indented under subclass 230.01.  Subject matter having circuits for deflecting an optical beam to a particular memory location.

SEE OR SEARCH THIS CLASS, SUBCLASS:

215,for read/write circuits using optics.
  
[List of Patents for class 365 subclass 235]    235Page memories:
 This subclass is indented under subclass 234.  Subject matter wherein memory locations in a plane are addressed simultaneously.

SEE OR SEARCH THIS CLASS, SUBCLASS:

106+,for particular radiant energy memories.
120+,for optical memories involving informational masking.
215,for optical reading and writing.

SEE OR SEARCH CLASS:

359Optical: Systems and Elements,   for appropriate systems and elements, in particular subclasses 1+ for holographic storage.
  
[List of Patents for class 365 subclass 236]    236Counting:
 This subclass is indented under subclass 230.01.  Subject matter wherein a memory location is addressed by counting locations to determine when the selected one is reached, e.g., counting matrix rows to address the desired row.

SEE OR SEARCH THIS CLASS, SUBCLASS:

238,where all rows (columns) of a memory plane are addressed simultaneously.
239,for selection of locations sequentially.

SEE OR SEARCH CLASS:

377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   for solid-state counter circuits.
  
[List of Patents for class 365 subclass 237]    237Electron beam:
 This subclass is indented under subclass 230.01.  Subject matter for addressing a memory device with an electron beam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217,for read/write circuits in an electron beam storage system.

SEE OR SEARCH CLASS:

315Electric Lamp and Discharge Devices: Systems,   subclasses 8.51+ for electron beam storage systems in general, subclasses 364+ for cathode-ray tube (CRT) deflection circuits.
377Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems,   subclass 99 for counters using beam type tubes.
  
[List of Patents for class 365 subclass 238]    238Cartesian memories:
 This subclass is indented under subclass 230.01.  Subject matter wherein all columns (or rows) of a memory plane are addressed simultaneously.

SEE OR SEARCH THIS CLASS, SUBCLASS:

235,for information stored similarly in optical memories.

SEE OR SEARCH CLASS:

340Communications: Electrical,   subclasses 2.2 through 2.31subclasses 14.1 through 14.69 for a decoder matrix.
  
[List of Patents for class 365 subclass 238.5]    238.5Byte or page addressing:
 This subclass is indented under subclass 230.01.  Subject matter which addresses a group of memory elements or a plurality of such groups as a single unit.
(1) Note. The information stored in each of such elements often represents a binary digit ("bit") and the information stored in such a group of memory elements represents digital words or bytes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

220,for a parallel read/write circuit.
230.03+,for addressing of plural blocks or banks of memory.
238,for a Cartesian memory address circuit.
  
[List of Patents for class 365 subclass 239]    239Sequential:
 This subclass is indented under subclass 230.01.  Subject matter where the memory locations are sequenced one after another in an addressing circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

236,for addressing memory locations by counting techniques.
238,for addressing simultaneously all columns (rows) of a memory plane.
  
[List of Patents for class 365 subclass 240]    240Using shift register:
 This subclass is indented under subclass 239.  Subject matter where the means for sequencing is a shift register.
  
[List of Patents for class 365 subclass 241]    241Detectors:
 This subclass is indented under subclass 239.  Subject matter where the memory locations are detected one after another.
  
[List of Patents for class 365 subclass 242]    242Current steering:
 This subclass is indented under subclass 230.01.  Subject matter having means for determining a current or voltage path to select a memory location.
  
[List of Patents for class 365 subclass 243]    243Diode:
 This subclass is indented under subclass 242.  Subject matter where the means is a diode(s).
  
[List of Patents for class 365 subclass 243.5]    243.5Including magnetic element:
 This subclass is indented under subclass 230.01.  Subject matter in which an address circuit includes a magnetic element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

225.5,for a read/write circuit having a magnetic element.
230.07,for an address decoder circuit having a magnetic element.

SEE OR SEARCH CLASS:

307Electrical Transmission or Interconnection Systems,   subclasses 401+ for a nonlinear reactor system.
327Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,   subclasses 190+ for a stable state circuit utilizing a transformer or saturable core device.
336Inductor Devices,   appropriate subclasses for structure of a magnetic circuit element.
  
[List of Patents for class 365 subclass 244]    244MISCELLANEOUS:
 This subclass is indented under the class definition.  Subject matter not provided for above.
  

FOREIGN ART COLLECTIONS

The definitions below correspond to abolished subclasses from which these collections were formed. See the Foreign Art Collection schedule of this class for specific correspondences. [Note: The titles and definitions for indented art collections include all the details of the one(s) that are hierarchically superior.]

FOR 100ASSOCIATIVE MEMORIES:
 Foreign art collection where the information is retrieved based on content rather than location; associative memories are also referred to as content or tag memories.
  
FOR 101READ/WRITE CIRCUIT:
 Foreign art collection for inserting, extracting, or handling of an information signal to be stored or retrieved.
(1) In this and its indented subclasses the term "processing" as applied to signals is specifically intended to exclude digital data processing systems and computer systems.
  
FOR 102Reference or dummy elements:
 Foreign art collection where the magnetic differential sensing circuit uses an additional magnetic element.
  
FOR 103Sync/clocking:
 Foreign art collection where synchronizing and clocking circuits are used to select a memory location.
  

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