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Classification Resources
 
Class   370MULTIPLEX COMMUNICATIONS
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 [List of Pre Grant Publications for class 370 subclass 200][List of Patents for class 370 subclass 200]200 PHANTOM
 [List of Pre Grant Publications for class 370 subclass 201][List of Patents for class 370 subclass 201]201 CROSSTALK SUPPRESSION
 [List of Pre Grant Publications for class 370 subclass 202][List of Patents for class 370 subclass 202]202 AMPLITUDE COMPRESSION OR EXPANSION
[List of Pre Grant Publications for class 370 subclass 203][List of Patents for class 370 subclass 203]203 GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES
 [List of Pre Grant Publications for class 370 subclass 212][List of Patents for class 370 subclass 212]212 PULSE WIDTH (PULSE DURATION) MODULATION
 [List of Pre Grant Publications for class 370 subclass 213][List of Patents for class 370 subclass 213]213 PULSE POSITION MODULATION
 [List of Pre Grant Publications for class 370 subclass 214][List of Patents for class 370 subclass 214]214 SIMULTANEOUS TELEGRAPHY AND TELEPHONY
 [List of Pre Grant Publications for class 370 subclass 215][List of Patents for class 370 subclass 215]215 PHASE MODULATION
[List of Pre Grant Publications for class 370 subclass 216][List of Patents for class 370 subclass 216]216 FAULT RECOVERY
[List of Pre Grant Publications for class 370 subclass 229][List of Patents for class 370 subclass 229]229 DATA FLOW CONGESTION PREVENTION OR CONTROL
[List of Pre Grant Publications for class 370 subclass 241][List of Patents for class 370 subclass 241]241 DIAGNOSTIC TESTING (OTHER THAN SYNCHRONIZATION)
[List of Pre Grant Publications for class 370 subclass 254][List of Patents for class 370 subclass 254]254 NETWORK CONFIGURATION DETERMINATION
[List of Pre Grant Publications for class 370 subclass 259][List of Patents for class 370 subclass 259]259 SPECIAL SERVICES
 [List of Pre Grant Publications for class 370 subclass 272][List of Patents for class 370 subclass 272]272 SEXTUPLEX
[List of Pre Grant Publications for class 370 subclass 273][List of Patents for class 370 subclass 273]273 QUADRUPLEX
[List of Pre Grant Publications for class 370 subclass 276][List of Patents for class 370 subclass 276]276 DUPLEX
 [List of Pre Grant Publications for class 370 subclass 297][List of Patents for class 370 subclass 297]297 DIPLEX
[List of Pre Grant Publications for class 370 subclass 298][List of Patents for class 370 subclass 298]298 LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE)
 [List of Pre Grant Publications for class 370 subclass 307][List of Patents for class 370 subclass 307]307 TRASMULTIPLEXERS
 [List of Pre Grant Publications for class 370 subclass 308][List of Patents for class 370 subclass 308]308 RESONANT TRANSFER TECHNIQUES
 [List of Pre Grant Publications for class 370 subclass 309][List of Patents for class 370 subclass 309]309 RESONANT TRANSFER SUBSTITUTES
[List of Pre Grant Publications for class 370 subclass 310][List of Patents for class 370 subclass 310]310 COMMUNICATION OVER FREE SPACE
[List of Pre Grant Publications for class 370 subclass 310.1][List of Patents for class 370 subclass 310.1]310.1 Subclass 310.1 indent level is 1 Using ATM as a wireles protocol
 [List of Pre Grant Publications for class 370 subclass 311][List of Patents for class 370 subclass 311]311 Subclass 311 indent level is 1 Signaling for performing battery saving
 [List of Pre Grant Publications for class 370 subclass 312][List of Patents for class 370 subclass 312]312 Subclass 312 indent level is 1 Message addressed to multiple destinations
[List of Pre Grant Publications for class 370 subclass 313][List of Patents for class 370 subclass 313]313 Subclass 313 indent level is 1 Portable address responsive receiver
[List of Pre Grant Publications for class 370 subclass 315][List of Patents for class 370 subclass 315]315 Subclass 315 indent level is 1 Repeater
[List of Pre Grant Publications for class 370 subclass 328][List of Patents for class 370 subclass 328]328 Subclass 328 indent level is 1 Having a plurality of contiguous regions served by respective fixed stations
 [List of Pre Grant Publications for class 370 subclass 339][List of Patents for class 370 subclass 339]339 Subclass 339 indent level is 1 Plural usage of common antenna
[List of Pre Grant Publications for class 370 subclass 340][List of Patents for class 370 subclass 340]340 Subclass 340 indent level is 1 Using trunking
 [List of Pre Grant Publications for class 370 subclass 342][List of Patents for class 370 subclass 342]342 Subclass 342 indent level is 1 Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)
[List of Pre Grant Publications for class 370 subclass 343][List of Patents for class 370 subclass 343]343 Subclass 343 indent level is 1 Combining or distributing information via frequency channels
[List of Pre Grant Publications for class 370 subclass 345][List of Patents for class 370 subclass 345]345 Subclass 345 indent level is 1 Combining or distributing information via time channels
[List of Pre Grant Publications for class 370 subclass 351][List of Patents for class 370 subclass 351]351 PATHFINDING OR ROUTING
[List of Pre Grant Publications for class 370 subclass 352][List of Patents for class 370 subclass 352]352 Subclass 352 indent level is 1 Combined circuit switching and packet switching
[List of Pre Grant Publications for class 370 subclass 357][List of Patents for class 370 subclass 357]357 Subclass 357 indent level is 1 Through a circuit switch
[List of Pre Grant Publications for class 370 subclass 389][List of Patents for class 370 subclass 389]389 Subclass 389 indent level is 1 Switching a message which includes an address header
 [List of Pre Grant Publications for class 370 subclass 390][List of Patents for class 370 subclass 390]390 Subclass 390 indent level is 2 Replicate messages for multiple destination distribution
 [List of Pre Grant Publications for class 370 subclass 391][List of Patents for class 370 subclass 391]391 Subclass 391 indent level is 2 Switching input signals having different aggregate bit rates
[List of Pre Grant Publications for class 370 subclass 392][List of Patents for class 370 subclass 392]392 Subclass 392 indent level is 2 Processing of address header for routing, per se
 [List of Pre Grant Publications for class 370 subclass 394][List of Patents for class 370 subclass 394]394 Subclass 394 indent level is 2 Sequencing or resequencing of packets to insure proper output sequence order
[List of Pre Grant Publications for class 370 subclass 395.1][List of Patents for class 370 subclass 395.1]395.1 Subclass 395.1 indent level is 2 Message transmitted using fixed length packets (e.g., ATM cells)
[List of Pre Grant Publications for class 370 subclass 396][List of Patents for class 370 subclass 396]396 Subclass 396 indent level is 3 Distributed switching
[List of Pre Grant Publications for class 370 subclass 398][List of Patents for class 370 subclass 398]398 Subclass 398 indent level is 3 Centralized switching
[List of Pre Grant Publications for class 370 subclass 395.2][List of Patents for class 370 subclass 395.2]395.2 Subclass 395.2 indent level is 3 Connection set-up/disconnect (e.g., Connection Admission Control)
[List of Pre Grant Publications for class 370 subclass 395.3][List of Patents for class 370 subclass 395.3]395.3 Subclass 395.3 indent level is 3 Connection identifier assignment
[List of Pre Grant Publications for class 370 subclass 395.4][List of Patents for class 370 subclass 395.4]395.4 Subclass 395.4 indent level is 3 Assigning period of time for information to be transmitted (e.g., scheduling)
[List of Pre Grant Publications for class 370 subclass 395.5][List of Patents for class 370 subclass 395.5]395.5 Subclass 395.5 indent level is 3 Multiprotocol network
[List of Pre Grant Publications for class 370 subclass 395.6][List of Patents for class 370 subclass 395.6]395.6 Subclass 395.6 indent level is 3 Adapting detail (e.g., converting to/from ATM, or detail of ATM Adaption Layers (AALs))
[List of Pre Grant Publications for class 370 subclass 395.7][List of Patents for class 370 subclass 395.7]395.7 Subclass 395.7 indent level is 3 Having detail of switch memory reading/writing
[List of Pre Grant Publications for class 370 subclass 400][List of Patents for class 370 subclass 400]400 Subclass 400 indent level is 2 Having a plurality of nodes performing distributed switching
 [List of Pre Grant Publications for class 370 subclass 411][List of Patents for class 370 subclass 411]411 Subclass 411 indent level is 2 Including sorting and merging networks
[List of Pre Grant Publications for class 370 subclass 412][List of Patents for class 370 subclass 412]412 Subclass 412 indent level is 2 Queuing arrangement
[List of Pre Grant Publications for class 370 subclass 419][List of Patents for class 370 subclass 419]419 Subclass 419 indent level is 2 Input or output circuit, per se (i.e., line interface)
[List of Pre Grant Publications for class 370 subclass 422][List of Patents for class 370 subclass 422]422 Subclass 422 indent level is 2 Centralized switching
 [List of Pre Grant Publications for class 370 subclass 427][List of Patents for class 370 subclass 427]427 Subclass 427 indent level is 2 Space switching
[List of Pre Grant Publications for class 370 subclass 428][List of Patents for class 370 subclass 428]428 Subclass 428 indent level is 1 Store and forward
 [List of Pre Grant Publications for class 370 subclass 430][List of Patents for class 370 subclass 430]430 Subclass 430 indent level is 1 FDM switching
[List of Pre Grant Publications for class 370 subclass 431][List of Patents for class 370 subclass 431]431 CHANNEL ASSIGNMENT TECHNIQUES
 [List of Pre Grant Publications for class 370 subclass 432][List of Patents for class 370 subclass 432]432 Subclass 432 indent level is 1 Messages addressed to multiple destinations
[List of Pre Grant Publications for class 370 subclass 433][List of Patents for class 370 subclass 433]433 Subclass 433 indent level is 1 Only active channels transmitted
 [List of Pre Grant Publications for class 370 subclass 436][List of Patents for class 370 subclass 436]436 Subclass 436 indent level is 1 Combined time and frequency assignment
 [List of Pre Grant Publications for class 370 subclass 437][List of Patents for class 370 subclass 437]437 Subclass 437 indent level is 1 Adaptive selection of channel assignment technique
[List of Pre Grant Publications for class 370 subclass 438][List of Patents for class 370 subclass 438]438 Subclass 438 indent level is 1 Using a separate control line or bus for access control
 [List of Pre Grant Publications for class 370 subclass 441][List of Patents for class 370 subclass 441]441 Subclass 441 indent level is 1 Combining or distributing information via code word channels using multiple access techniques (e.g., CDMA)
[List of Pre Grant Publications for class 370 subclass 442][List of Patents for class 370 subclass 442]442 Subclass 442 indent level is 1 Combining or distributing information via time channels using multiple access technique (e.g., TDMA)
[List of Pre Grant Publications for class 370 subclass 445][List of Patents for class 370 subclass 445]445 Subclass 445 indent level is 1 Carrier sense multiple access (CSMA)
[List of Pre Grant Publications for class 370 subclass 449][List of Patents for class 370 subclass 449]449 Subclass 449 indent level is 1 Polling
[List of Pre Grant Publications for class 370 subclass 458][List of Patents for class 370 subclass 458]458 Subclass 458 indent level is 1 Using time slots
 [List of Pre Grant Publications for class 370 subclass 462][List of Patents for class 370 subclass 462]462 Subclass 462 indent level is 1 Arbitration for access to a channel
 [List of Pre Grant Publications for class 370 subclass 463][List of Patents for class 370 subclass 463]463 Subclass 463 indent level is 1 Details of circuit or interface for connecting user to the network
[List of Pre Grant Publications for class 370 subclass 464][List of Patents for class 370 subclass 464]464 COMMUNICATION TECHNIQUES FOR INFORMATION CARRIED IN PLURAL CHANNELS
[List of Pre Grant Publications for class 370 subclass 465][List of Patents for class 370 subclass 465]465 Subclass 465 indent level is 1 Adaptive
 [List of Pre Grant Publications for class 370 subclass 474][List of Patents for class 370 subclass 474]474 Subclass 474 indent level is 1 Assembly or disassembly of messages having address headers
 [List of Pre Grant Publications for class 370 subclass 475][List of Patents for class 370 subclass 475]475 Subclass 475 indent level is 1 Address transmitted
 [List of Pre Grant Publications for class 370 subclass 476][List of Patents for class 370 subclass 476]476 Subclass 476 indent level is 1 Byte assembly and formatting
 [List of Pre Grant Publications for class 370 subclass 477][List of Patents for class 370 subclass 477]477 Subclass 477 indent level is 1 Transmission bandwidth conservation
 [List of Pre Grant Publications for class 370 subclass 478][List of Patents for class 370 subclass 478]478 Subclass 478 indent level is 1 Combined time division and frequency division
 [List of Pre Grant Publications for class 370 subclass 479][List of Patents for class 370 subclass 479]479 Subclass 479 indent level is 1 Combining or distributing information via code word channels
[List of Pre Grant Publications for class 370 subclass 480][List of Patents for class 370 subclass 480]480 Subclass 480 indent level is 1 Combining or distributing information via frequency channels
[List of Pre Grant Publications for class 370 subclass 498][List of Patents for class 370 subclass 498]498 Subclass 498 indent level is 1 Combining or distributing information via time channels
 [List of Pre Grant Publications for class 370 subclass 499][List of Patents for class 370 subclass 499]499 Subclass 499 indent level is 2 Polarity multiplex
 [List of Pre Grant Publications for class 370 subclass 500][List of Patents for class 370 subclass 500]500 Subclass 500 indent level is 2 Pilot
[List of Pre Grant Publications for class 370 subclass 501][List of Patents for class 370 subclass 501]501 Subclass 501 indent level is 2 Repeater
[List of Pre Grant Publications for class 370 subclass 503][List of Patents for class 370 subclass 503]503 Subclass 503 indent level is 2 Synchronizing
 [List of Pre Grant Publications for class 370 subclass 521][List of Patents for class 370 subclass 521]521 Subclass 521 indent level is 2 Time compression or expansion
[List of Pre Grant Publications for class 370 subclass 522][List of Patents for class 370 subclass 522]522 Subclass 522 indent level is 2 Signaling (ancillary to main information)
 [List of Pre Grant Publications for class 370 subclass 529][List of Patents for class 370 subclass 529]529 Subclass 529 indent level is 2 Information superimposed on other information
 [List of Pre Grant Publications for class 370 subclass 530][List of Patents for class 370 subclass 530]530 Subclass 530 indent level is 2 Staircase wave
 [List of Pre Grant Publications for class 370 subclass 531][List of Patents for class 370 subclass 531]531 Subclass 531 indent level is 2 Magnetic core for switching or storage
 [List of Pre Grant Publications for class 370 subclass 532][List of Patents for class 370 subclass 532]532 Subclass 532 indent level is 2 Multiplexer or distributor and technique for handling low level input signal
 [List of Pre Grant Publications for class 370 subclass 533][List of Patents for class 370 subclass 533]533 Subclass 533 indent level is 2 Multiplexer or distributor using pulse amplitude modulation
 [List of Pre Grant Publications for class 370 subclass 534][List of Patents for class 370 subclass 534]534 Subclass 534 indent level is 2 Multiplexer or distributor using electron beam switching device
 [List of Pre Grant Publications for class 370 subclass 535][List of Patents for class 370 subclass 535]535 Subclass 535 indent level is 2 Multiplexing combined with demultiplexing
 [List of Pre Grant Publications for class 370 subclass 536][List of Patents for class 370 subclass 536]536 Subclass 536 indent level is 2 Demultiplexing single signal into plural parallel channels (e.g., parallel transmission for increasing transmission speed)
[List of Pre Grant Publications for class 370 subclass 537][List of Patents for class 370 subclass 537]537 Subclass 537 indent level is 2 Multiplexing plural input channels to a common output channel
[List of Pre Grant Publications for class 370 subclass 542][List of Patents for class 370 subclass 542]542 Subclass 542 indent level is 2 Demultiplexing single input channel to plural output channels
 [List of Pre Grant Publications for class 370 subclass 545][List of Patents for class 370 subclass 545]545 Subclass 545 indent level is 2 Conversion of rate from a single input to a single output
 [List of Pre Grant Publications for class 370 subclass 546][List of Patents for class 370 subclass 546]546 MISCELLANEOUS
 
CROSS-REFERENCE ART COLLECTIONS
 
[List of Pre Grant Publications for class 370 subclass 901][List of Patents for class 370 subclass 901]901 WIDE AREA NETWORK
[List of Pre Grant Publications for class 370 subclass 908][List of Patents for class 370 subclass 908]908 LOCAL AREA NETWORK
[List of Pre Grant Publications for class 370 subclass 912][List of Patents for class 370 subclass 912]912 PACKET COMMUNICATIONS
 [List of Pre Grant Publications for class 370 subclass 914][List of Patents for class 370 subclass 914]914 RATE CONVERTER
 [List of Pre Grant Publications for class 370 subclass 915][List of Patents for class 370 subclass 915]915 TIME DIVISION CELLULAR RADIO SYSTEMS
 [List of Pre Grant Publications for class 370 subclass 916][List of Patents for class 370 subclass 916]916 MULTIPLEXER/DEMULTIPLEXER
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived.
      FOR100          SIMULTANEOUS TELEGRAPHY AND TELEPHONY (370/125)
  FOR101          MULTIPLEX SWITCHING (370/53)
      FOR102          Subclass FOR102 indent level is 1 Pathfinding (370/54)
      FOR103          Subclass FOR103 indent level is 1 Drop channel (370/55)
      FOR104          Subclass FOR104 indent level is 1 Concentrators (370/56)
      FOR105          Subclass FOR105 indent level is 1 FDM switching (frequency division multiplexing) (370/57)
  FOR106          Subclass FOR106 indent level is 1 TDM switching (time division multiplexing) (370/58.1)
  FOR107          Subclass FOR107 indent level is 2 Control processing (370/58.2)
      FOR108          Subclass FOR108 indent level is 3 Distributed (370/58.3)
      FOR109          Subclass FOR109 indent level is 2 T-S (Time-Space) or S-T (370/59)
  FOR110          Subclass FOR110 indent level is 2 Packet or addressed data (370/60)
      FOR112          Subclass FOR112 indent level is 2 Store and forward (370/61)
      FOR113          Subclass FOR113 indent level is 2 Special services with switching (e.g., conference) (370/62)
      FOR114          Subclass FOR114 indent level is 2 TST (Time-Space-Time) (370/63)
      FOR115          Subclass FOR115 indent level is 2 STS (Space-Time-Space) (370/64)
      FOR116          Subclass FOR116 indent level is 2 Folded network (370/65)
      FOR117          Subclass FOR117 indent level is 2 Space stage, per se (370/65.5)
  FOR118          Subclass FOR118 indent level is 2 Time only (370/66)
      FOR119          Subclass FOR119 indent level is 3 Bus switch (370/67)
      FOR120          Subclass FOR120 indent level is 2 Time slot interchangers, per se (370/68)
      FOR121          Subclass FOR121 indent level is 2 With signalling feature (370/68.1)
  FOR122          FREQUENCY DIVISION (370/69.1)
      FOR123          Subclass FOR123 indent level is 1 Multiple frequency translations (370/120)
      FOR124          Subclass FOR124 indent level is 1 Carrier generation (370/121)
      FOR125          Subclass FOR125 indent level is 1 Angle modulation (370/122)
      FOR126          Subclass FOR126 indent level is 1 Filtering techniques (370/123)
      FOR127          Subclass FOR127 indent level is 1 Digital analysis or synthesis of group (370/70)
  FOR128          Subclass FOR128 indent level is 1 Subscriber carrier (370/71)
      FOR129          Subclass FOR129 indent level is 2 Connecting filters (370/72)
      FOR130          Subclass FOR130 indent level is 2 Program distribution (370/73)
      FOR131          Subclass FOR131 indent level is 1 Bus (distributed stations) (370/124)
      FOR132          Subclass FOR132 indent level is 1 Pilot (370/74)
      FOR133          Subclass FOR133 indent level is 1 Repeaters (370/75)
      FOR134          Subclass FOR134 indent level is 1 Signalling (370/76)
  FOR135          TIME DIVISION (370/77)
      FOR136          Subclass FOR136 indent level is 1 Polarity multiplex (370/78)
  FOR137          Subclass FOR137 indent level is 1 Adaptive systems (370/79)
  FOR138          Subclass FOR138 indent level is 2 Only active channels transmitted (370/80)
      FOR140          Subclass FOR140 indent level is 2 Frame length (370/82)
      FOR141          Subclass FOR141 indent level is 2 Byte length (370/83)
      FOR142          Subclass FOR142 indent level is 2 Rate (370/84)
  FOR143          Subclass FOR143 indent level is 1 Bus transmission (370/85.1)
  FOR144          Subclass FOR144 indent level is 2 Contention (370/85.2)
      FOR145          Subclass FOR145 indent level is 3 Carrier sense (370/85.3)
  FOR146          Subclass FOR146 indent level is 3 Token passing (370/85.4)
      FOR147          Subclass FOR147 indent level is 4 Loop or ring (370/85.5)
      FOR148          Subclass FOR148 indent level is 2 Priority (370/85.6)
  FOR149          Subclass FOR149 indent level is 2 Variable channel assignment (370/85.7)
      FOR150          Subclass FOR150 indent level is 3 Polling (370/85.8)
  FOR151          Subclass FOR151 indent level is 2 Plural bus (370/85.9)
      FOR156          Subclass FOR156 indent level is 2 Loop or ring (370/85.15)
  FOR157          Subclass FOR157 indent level is 1 Asynchronous and nonsynchronous (370/91)
  FOR163          Subclass FOR163 indent level is 1 Variable channel assignment (370/95.1)
      FOR164          Subclass FOR164 indent level is 2 Polling (370/95.2)
      FOR165          Subclass FOR165 indent level is 2 Time division multiple access (370/95.3)
      FOR166          Subclass FOR166 indent level is 1 TDM pulse repeater (370/97)
      FOR167          Subclass FOR167 indent level is 1 Pilot (370/98)
      FOR168          Subclass FOR168 indent level is 1 Byte assembly and formatting (370/99)
  FOR169          Subclass FOR169 indent level is 1 Synchronizing (370/100.1)
      FOR170          Subclass FOR170 indent level is 2 Reference indication consists of a gap (370/101)
      FOR171          Subclass FOR171 indent level is 2 Pulse stuffing or deletion (370/102)
      FOR172          Subclass FOR172 indent level is 2 Mutual (reciprocal) synchronization (370/103)
      FOR173          Subclass FOR173 indent level is 2 Moving satelite (370/104.1)
      FOR174          Subclass FOR174 indent level is 2 Distributed (370/105)
      FOR175          Subclass FOR175 indent level is 2 Frame (370/105.1)
      FOR176          Subclass FOR176 indent level is 2 Channel (370/105.2)
      FOR177          Subclass FOR177 indent level is 2 Bit phase or jitter (370/105.3)
      FOR178          Subclass FOR178 indent level is 2 Unique synchronization word (370/105.4)
      FOR179          Subclass FOR179 indent level is 2 Unique sychronization pulse (370/105.5)
      FOR180          Subclass FOR180 indent level is 2 Plural sychronizing words (370/106)
      FOR181          Subclass FOR181 indent level is 2 Pseudo-random (370/107)
      FOR182          Subclass FOR182 indent level is 2 Including delay device (370/108)
      FOR183          Subclass FOR183 indent level is 1 Time compression or expansion (370/109)
  FOR184          Subclass FOR184 indent level is 1 Signalling (ancilliary to main information) (370/110.1)
  FOR189          Subclass FOR189 indent level is 1 Multiplexers/distributors (hierarchy and level) (370/112)
      FOR193          Subclass FOR193 indent level is 1 Staircase wave (370/116)
      FOR194          Subclass FOR194 indent level is 1 Magnetic core for switching or storage (370/117)
      FOR195          TRANSMISSION BANDWIDTH CONSERVATION (370/118)
      FOR196          MISCELLANEOUS (370/119)
     PATHFINDING OR ROUTING
     Subclass  indent level is 1 Switching a message which includes an address header