U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
[Manual of Classification, Class Listing] [Classification Definitions, Class Listing] [USPTO Home Page]

Index to the U.S. Patent Classification System
Entries as of June 30, 2000

[Explanation of Data]
Links to Other Index Entries Beginning With:
A B C Co D E F G H I J K L M N O P Q R S Sp T U V W X Y Z

Index Entries Beginning With " K "


The Manual of U.S. Patent Classification may be accessed by clicking on the classification, below.
( please note that links for some subclasses may not be available )
--------------------------------------------------------------

Class / Subclass - - - - Index Term

562 / 71______ - - - - K ACID
089 / 1.1_____ .- - - - K GUNS
359 / 616____+ - - - - KALEIDOSCOPES
D21 / 60______ - - - - . . DESIGN
106 / ________ - - - - KALSOMINES
536 / 13.7___+ .- - - - KANAMYCIN
000 / ________ - - - - KAOLIN (SEE CLAY)
536 / 114_____ - - - - KARAYA GUM
530 / 203_____ - - - - KAURI GUM
114 / 347_____ - - - - KAYAKS
D12 / 302_____ - - - - . . DESIGN
000 / ________ - - - - KEELS
405 / 7_______ - - - - . . BLOCKS FOR SHIPS IN DRY DOCK
114 / 149_____ - - - - . . RUDDERS MOUNTED ON OR BELOW KEEL
114 / 140____+ - - - - . . SHIP
106 / 777_____ - - - - KEENES CEMENT
000 / ________ - - - - KEEPERS
292 / 340____+ - - - - . . LOCK OR LATCH
070 / 102_____ - - - - . . . . . CASING INTERFITTING FOR
070 / 102_____ - - - - . . . . . . . SWINGING DOOR
070 / 96_____+ - - - - . . . . . EXTENSIBLE FOR SLIDING DOOR
054 / 62______ - - - - . . MOVABLE CHECKHOOK
426 / 583_____ - - - - KEFIR
000 / ________ - - - - KEG SEE BARREL
464 / 163_____ - - - - KELLY
000 / ________ - - - - KELP
423 / 179____+ - - - - . . ALKALI METAL INORGANIC
423 / 179____+ - - - - . . . . . RECOVERY FROM
423 / 500_____ - - - - . . IODINE RECOVERY FROM
119 / 482____+ - - - - KENNELS
119 / 484_____ - - - - . . WINDOW
530 / 357_____ - - - - KERATINS
435 / 272____+ - - - - . . FERMENTATIVE TREATMENT
000 / ________ - - - - KERF
000 / ________ - - - - . . CUTTING
299 / ________ - - - - . . . . . MINING OR DISINTEGRATING
299 / ________ - - - - . . . . . . . IN SITU
144 / 136.1__+ .- - - - . . . . . WOODWORKING
083 / 102.1___ .- - - - . . GUIDE
083 / 102.1___ .- - - - . . SPREADING
000 / ________ - - - - KETCHUP SEE CATSUP
568 / 301____+ - - - - KETENES
564 / 271____+ - - - - KETIMINES
564 / 276____+ - - - - . . ACYCLIC
564 / 271_____ - - - - . . AROMATIC
568 / 414____+ - - - - KETOL
000 / ________ - - - - KETOLE (SEE INDOLE)
568 / 303____+ - - - - KETONES
000 / ________ - - - - . . CARBOXYLIC ACID ESTERS
560 / 174____+ - - - - . . . . . ACYCLIC
560 / 126_____ - - - - . . . . . ALICYCLIC
560 / 51_____+ - - - - . . . . . AROMATIC
436 / 128_____ - - - - . . KETONE BODIES
564 / 253____+ - - - - KETOXIMES
220 / ________ - - - - KETTLE SEE POT
084 / 419_____ - - - - . . DRUMS
126 / 345____+ - - - - . . FURNACE
126 / 373.1__+ .- - - - . . OPEN TOP LIQUID HEATING VESSEL
000 / ________ - - - - KEY
000 / ________ - - - - . . BOARD
341 / 22_____+ - - - - . . . . . CODE GENERATOR
250 / 227.22__ .- - - - . . . . . CONTROLLED LIGHT VALVES WITH
250 / 227.22__ .- - - - . . . . . . . LIGHT CONDUCTORS
D14 / 399____+ - - - - . . . . . DESIGN
345 / 168____+ - - - - . . . . . DISPLAY CONTROL
341 / 22_____+ - - - - . . . . . ELECTRIC SIGNAL SYSTEMS
361 / 680_____ - - - - . . . . . . . HOUSING OR MOUNTING ASSEMBLY
345 / 168____+ - - - - . . . . . . . KEYBOARD ACTVATED DISPLAY
084 / 445_____ - - - - . . . . . MUSICAL INSTRUMENT TRANSPOSER
084 / 423R___+ - - - - . . . . . MUSICAL INSTRUMENTS
D17 / 1______+ - - - - . . . . . . . DESIGN
984 / 148_____ - - - - . . . . . . . FOR ACCORDIONS
984 / 61______ - - - - . . . . . . . FOR PIANOS
434 / 227____+ - - - - . . . . . OPERATION TRAINING
984 / 13______ - - - - . . . . . . . FOR ORGANS OR HARMONIUMS
234 / 123____+ - - - - . . . . . PUNCH MACHINE, SELECTIVE
235 / 145R___+ - - - - . . . . . REGISTERS
235 / 27______ - - - - . . . . . REGISTERS KEY LOCKS
200 / ________ - - - - . . . . . SWITCHES, MECHANICALLY ACTUATED,
200 / ________ - - - - . . . . . . . GENERAL
400 / 472____+ - - - - . . . . . TYPEWRITER
400 / 496____+ - - - - . . . . . TYPEWRITER KEY LEVERS
400 / 663____+ - - - - . . . . . TYPEWRITER KEY LOCKS
220 / 274____+ - - - - . . CAN OPENING
D08 / 347____+ - - - - . . CLOCK WINDING
968 / 24_____+ - - - - . . CLOCK WINDING
434 / 222____+ - - - - . . CODE INSTRUCTION
220 / 210_____ - - - - . . CONTROLLED CLOSURE
084 / 1______+ - - - - . . CONTROLLED MUSICAL INSTRUMENTS
084 / 2______+ - - - - . . . . . AUTOMATIC PLAYERS
411 / 513____+ - - - - . . COTTER TYPE
411 / 356____+ - - - - . . . . . NAIL LOCK
000 / ________ - - - - . . ELECTRIC
340 / 287____+ - - - - . . . . . SIGNAL BOX TRANSMISSION
200 / ________ - - - - . . . . . SWITCH
178 / 101____+ - - - - . . . . . TELEGRAPH
379 / 251____+ - - - - . . . . . TELEPHONE
070 / 456R___+ - - - - . . HOLDERS
206 / 37.1___+ .- - - - . . . . . CASE
D03 / 207____+ - - - - . . . . . DESIGN, CASES OR RINGS
362 / 116_____ - - - - . . . . . WITH LIGHT
000 / ________ - - - - . . HOLE
116 / 80______ - - - - . . . . . ALARM
070 / 455_____ - - - - . . . . . COVER
070 / 452_____ - - - - . . . . . ESCUTCHEONS
070 / 423____+ - - - - . . . . . GUARDS
362 / 100_____ - - - - . . . . . ILLUMINATOR
081 / 122____+ - - - - . . HOROLOGICAL APPARATUS
076 / 114_____ - - - - . . . . . MAKING
368 / 214_____ - - - - . . . . . WINDING ATTACHED
283 / 74_____+ - - - - . . IDENTIFICATION TAGS
362 / 100_____ - - - - . . LOCK ILLUMINATOR
070 / 393____+ - - - - . . LOCK TYPE (SEE KEY HOLE)
116 / 80______ - - - - . . . . . ALARM
409 / 89_____+ - - - - . . . . . CUTTING BY MILLING
D08 / 347____+ - - - - . . . . . DESIGN
070 / 456R___+ - - - - . . . . . HOLDERS
070 / 460_____ - - - - . . . . . IDENTIFICATION
070 / 454_____ - - - - . . . . . INSERTION GUIDE
076 / 110_____ - - - - . . . . . PROCESSES AND BLANKS
000 / ________ - - - - . . LOCKING BOLT OR NUT TO SUBSTRUCTURE
411 / 137_____ - - - - . . . . . LATERALLY INTRODUCED KEY
411 / 110_____ - - - - . . . . . LONGITUDIANAL KEY
000 / ________ - - - - . . LOCKING BOLT TO NUT
411 / 216_____ - - - - . . . . . ELONGATED KEY, DISPOSED AXIALLY
411 / 321_____ - - - - . . . . . ELONGATED KEY, DISPOSED AXIALLY
411 / 199_____ - - - - . . . . . LATERALLY MOVABLE KEY
411 / 209_____ - - - - . . . . . LATERALLY MOVABLE KEY
411 / 315_____ - - - - . . . . . LATERALLY MOVABLE KEY
411 / 224_____ - - - - . . . . . RECEIVED IN EACH OF PLURAL NUTS
411 / 205_____ - - - - . . . . . SWINGABLE KEY
000 / ________ - - - - . . . . . USED WITH THREAD LOCK
411 / 292_____ - - - - . . . . . . . LONGITUDINAL KEY
411 / 294_____ - - - - . . . . . . . RADIAL KEY
411 / 300_____ - - - - . . . . . . . TANGENTIAL KEY
000 / ________ - - - - . . MECHANISM
084 / 315____+ - - - - . . . . . BOWED STRINGED INSTRUMENTS
084 / 320____+ - - - - . . . . . PLUCKED STRINGED INSTRUMENTS
178 / 101____+ - - - - . . MORSE
000 / ________ - - - - . . OPERATED (SEE DEVICE OPERATED)
238 / 151____+ - - - - . . RAIL JOINTS UTILIZING
295 / 19______ - - - - . . RAILWAY WHEEL TIRE FASTENING
D03 / 207____+ - - - - . . RING OR FOB
409 / 190_____ - - - - . . SEATER
178 / 101____+ - - - - . . TELEGRAPH
D14 / 456_____ - - - - . . . . . DESIGN
403 / 355____+ - - - - . . TORQUE TRANSMITTING
029 / 250_____ - - - - . . . . . PULLERS
074 / 356____+ - - - - . . . . . SLIDABLE FOR GEARING
000 / ________ - - - - KEYED BLOCK (SEE BLOCK)
000 / ________ - - - - KEYER
375 / 309____+ - - - - . . IN TRANSMITTER
178 / 66.2____ .- - - - . . . . . ALTERNATING CURRENT TELEGRAPHY
327 / 185____+ - - - - . . MISCELLANEOUS ELECTRONIC DEVICE
327 / 185____+ - - - - . . . . . TYPE
052 / 575_____ - - - - KEYSTONE BLOCKS
016 / 402_____ - - - - KICK PLATE
016 / DIG 2___ - - - - . . KICK GUARD
083 / 707____+ - - - - KICKER
000 / ________ - - - - KICKERS AND BLOWING AGENT MODERATORS
000 / ________ - - - - . (SEE SYNTHETIC RESIN OR NATURAL
000 / ________ - - - - . RUBBER)
008 / 157_____ - - - - KIER TREATMENT OF FIBERS
432 / 120____+ - - - - KILN
202 / ________ - - - - . . CARBONIZING
034 / 201____+ - - - - . . DRYING
D15 / 144.1___ .- - - - . . KILN
002 / 74______ - - - - KIMONOS
000 / ________ - - - - KINDLER
044 / 542____+ - - - - . . COMPOSITION
000 / ________ - - - - KINEMATOGRAPHIC APPARATUS
000 / ________ - - - - . (SEE MOTION PICTURE)
000 / ________ - - - - KINESCOPE
313 / 364____+ - - - - . . CATHODE RAY TUBE
352 / 129_____ - - - - . . MOTION PICTURE
348 / 805____+ - - - - . . TELEVISION SYSTEM USING
601 / 1______+ - - - - KINESITHERAPY
D24 / 200____+ - - - - . . DESIGN
403 / ________ - - - - KING PIN
072 / 472_____ - - - - KINGBOLTS
000 / ________ - - - - KITCHEN
312 / ________ - - - - . . CABINETS
312 / 210.5___ .- - - - . . . . . WITH SIFTER
D07 / 368____+ - - - - . . UTENSILS
244 / 153R___+ - - - - KITES
D21 / 88______ - - - - . . DESIGN
000 / ________ - - - - KITS
206 / 541____+ - - - - . . CAMP
190 / 12A_____ - - - - . . . . . CONVERTIBLE TO TABLE
206 / 569_____ - - - - . . DIAGNOSTIC
206 / 541____+ - - - - . . LUNCH
206 / 541____+ - - - - . . MESS
396 / 519____+ - - - - . . PHOTOGRAPHIC
126 / 38______ - - - - . . POCKET STOVE
246 / 488_____ - - - - . . SIGNAL FOR TRAINMEN
132 / 286____+ - - - - . . TOILET KIT
401 / 118_____ - - - - . . . . . ABSENT SPECIAL TOILET ARTICLES
401 / 118____+ - - - - . . . . . . . EG, MIRROR
315 / 5______+ - - - - KLYSTRON
330 / 45______ - - - - . . AMPLIFIER
329 / ________ - - - - . . DEMODULATOR
332 / ________ - - - - . . MODULATOR
331 / 83______ - - - - . . OSCILLATOR
315 / 5.18___+ .- - - - . . REFLEX
224 / 627____+ - - - - KNAPSACK
224 / 153_____ - - - - . . BACKPACK CONVERTIBLE TO OTHER
224 / 153_____ - - - - . . . . . DEVISE
224 / 637____+ - - - - . . WITH BELT
000 / ________ - - - - KNEADER (SEE MIXER)
269 / 302.1___ .- - - - . . BREAD BOARD
366 / 69_____+ - - - - . . BREAD, PASTRY OR CONFECTION
416 / 70R_____ - - - - . . . . . IMPLEMENTS
601 / 134____+ - - - - . . SURGICAL
000 / ________ - - - - . . VULCANIZABLE GUMS
425 / 197____+ - - - - . . . . . APPARATUS
425 / 200____+ - - - - . . . . . APPARATUS
000 / ________ - - - - KNEE
000 / ________ - - - - . . ACTION
280 / 688____+ - - - - . . . . . RUNNING GEAR SPRINGS
180 / 348____+ - - - - . . . . . SHAFT TRANSMISSION MECHANISM
180 / 348____+ - - - - . . . . . . . COMBINED
280 / 96.1___+ .- - - - . . . . . STUB AXLE MOUNTS
267 / 228____+ - - - - . . . . . VEHICLE SPRING DEVICES
623 / 39_____+ - - - - . . ARTIFICIAL
623 / 20.14__+ .- - - - . . . . . KNEE BONE
002 / 62______ - - - - . . GARMENT PROTECTORS
002 / 228_____ - - - - . . LENGTH TROUSERS OR OVERALLS
276 / 39______ - - - - . . LOCK FOR COMPOSING STICK
074 / 515R____ - - - - . . OPERATED CONTROL LEVER OR LINKAGE
002 / 24______ - - - - . . PADS OR RESTS
114 / 87______ - - - - . . SHIP
269 / ________ - - - - . . SUPPORT SURGICAL TABLE COMBINED
280 / 27______ - - - - . . VEHICLE RUNNER
312 / 194____+ - - - - KNEEHOLE DESK
000 / ________ - - - - KNIFE
D07 / 637_____ - - - - . . BOX OR HOLDER
083 / 954____* - - - - . . CHANGING
030 / 138____+ - - - - . . CUTLERY
076 / 82_____+ - - - - . . CUTTING
D07 / 649____+ - - - - . . DESIGN
D07 / 646_____ - - - - . . ELECTRIC OR BATTERY DRIVEN
030 / ________ - - - - . . HAND MANIPULABLE CUTTING
007 / 151____+ - - - - . . . . . ADDITIONAL TOOL COMBINED
D08 / DIG 4___ - - - - . . HANDLES
451 / 128_____ - - - - . . HARVESTER
451 / 372____+ - - - - . . . . . CLAMP
224 / 232_____ - - - - . . HOLDER, BODY OR BELT ATTACHED
028 / 260_____ - - - - . . KNIFE EDGE TEXTURING
D22 / 118_____ - - - - . . MACHETTE OR HUNTING KNIFE
451 / 419____+ - - - - . . MACHINE KNIFE IN SITU
451 / 45______ - - - - . . PROCESSES
248 / 37.3___+ .- - - - . . REST
D08 / 35______ - - - - . . SHARPENER ATTACHMENT FOR FOOD MIXER
D08 / 63______ - - - - . . SHARPENER, POWERED
200 / 472_____ - - - - . . SNAP TYPE
241 / 291____+ - - - - . . SOLID MATERIAL COMMINUTION
076 / 89.2____ .- - - - . . SWAGING
200 / 554____+ - - - - . . SWITCH, KNIFE BLADE
066 / 169R___+ - - - - KNIT FABRICS AND ARTICLES
002 / 195.8___ .- - - - . . CAPS
D05 / 47_____+ - - - - . . DESIGN
028 / 218_____ - - - - . . KNIT-DEKNIT TEXTURING
002 / 147_____ - - - - . . NECKTIES
000 / ________ - - - - KNITTING
066 / 2_______ - - - - . . DARNING
D05 / 11_____+ - - - - . . DESIGN
066 / 147____+ - - - - . . FABRIC MANIPULATION
066 / 169R___+ - - - - . . FABRIC OR ARTICLE
066 / 125R___+ - - - - . . FEEDING
066 / 3______+ - - - - . . LOOPER PIN & HOOK
000 / ________ - - - - . . MACHINES
066 / 90_____+ - - - - . . . . . ELEMENTS
066 / 116____+ - - - - . . NEEDLES SEE NEEDLE & NEEDLE
066 / 7______+ - - - - . . . . . INDEPENDENT NEEDLE MACHINES
066 / 114____+ - - - - . . . . . NEEDLE BEDS
066 / 90_____+ - - - - . . . . . NEEDLE COOPERATING ELEMENTS
066 / 78_____+ - - - - . . . . . UNITED NEEDLE MACHINES
066 / 231____+ - - - - . . PATTERN MECHANISM
066 / 1.5_____ .- - - - . . REKNITTING
030 / 151____+ - - - - . . SHEATHS
066 / 157____+ - - - - . . STOPPING
007 / 158____+ - - - - . . . . . ADDITIONAL TOOL COMBINED
016 / 441____+ - - - - KNOBS
005 / 281_____ - - - - . . BED POST ORNAMENT
070 / 445_____ - - - - . . COMBINATION LOCK OPERATOR
292 / 347_____ - - - - . . DOOR
292 / 348____+ - - - - . . . . . ATTACHING DEVICES
292 / 356_____ - - - - . . . . . BEARINGS
D08 / 300____+ - - - - . . . . . DESIGN
016 / 414_____ - - - - . . . . . MISCELLANEOUS HARDWARE
016 / 441____+ - - - - . . . . . MISCELLANEOUS HARDWARE
292 / 357_____ - - - - . . . . . ROSE PLATES
016 / 433_____ - - - - . . INSULATED
040 / 331____+ - - - - . . LABEL COMBINED
070 / 207____+ - - - - . . LOCK COMBINED
074 / 553_____ - - - - . . MACHINE ELEMENT
000 / ________ - - - - . . MAKING
072 / ________ - - - - . . . . . DEFORMING SHEET METAL
029 / 896.5___ .- - - - . . . . . METAL
D08 / 300____+ - - - - . . PULL OR
116 / ________ - - - - . . SIGNAL COMBINED (SEE KNOB)
000 / ________ - - - - KNOCKDOWN
005 / ________ - - - - . . BEDS AND COTS
217 / 12R____+ - - - - . . BOX WOODEN
312 / 266____+ - - - - . . BUREAUS
312 / 257.1__+ .- - - - . . CABINETS
099 / 449_____ - - - - . . COOKING RACK
217 / 43R____+ - - - - . . CRATE WOODEN
312 / 195_____ - - - - . . DESKS KNEEHOLE TYPE
164 / 400_____ - - - - . . FOUNDRY CORE BAR
105 / 363_____ - - - - . . FREIGHT CAR
056 / 400.19_+ .- - - - . . HAND RAKE
030 / 332_____ - - - - . . HOLD KNIFE OR RAZOR
182 / 194_____ - - - - . . LADDER
108 / 150_____ - - - - . . PEDESTAL TABLE
040 / 779_____ - - - - . . PICTURE FRAMES
030 / 47______ - - - - . . RAZOR
242 / 407.1___ .- - - - . . REEL
242 / 607____+ - - - - . . . . . SPOOL
209 / 414_____ - - - - . . SIFTER SUPPORT
248 / 529_____ - - - - . . STAND
248 / 165_____ - - - - . . . . . PLURAL LEG
248 / 150_____ - - - - . . . . . RECEPTACLE
126 / 9R______ - - - - . . STOVES
446 / 85_____+ - - - - . . TOYS
280 / 278_____ - - - - . . VELOCIPEDE
280 / 287_____ - - - - . . . . . FRAMES
177 / 126____+ - - - - . . WEIGHING SCALE
000 / ________ - - - - KNOCKERS
019 / 37______ - - - - . . BOLL HULLING COMBINED
019 / 36______ - - - - . . . . . BREAKER COMBINED
212 / 116_____ - - - - . . CABLE HOIST
D08 / 401_____ - - - - . . DOOR
209 / 382_____ - - - - . . SIFTING ELEMENT
220 / 265____+ - - - - KNOCKOUTS
289 / ________ - - - - KNOT AND KNOTTING (SEE TYING)
112 / 22______ - - - - . . BOOK SEWING MACHINE
028 / 227_____ - - - - . . DETECTOR
000 / ________ - - - - . . HARVESTER
056 / 433____+ - - - - . . . . . COMPRESSING AND BINDING
056 / 131____+ - - - - . . . . . CUTTING CONVEYING AND BINDING
056 / 343_____ - - - - . . . . . RAKING AND BUNDLING
087 / 53______ - - - - . . MESH FABRIC
087 / 12______ - - - - . . . . . MAKING
002 / 148____+ - - - - . . NECKTIE
016 / 207_____ - - - - . . SASH CORD
112 / 156_____ - - - - . . SEWING MACHINE STITCH FORMER
403 / ________ - - - - . . STRAND JOINT
140 / 101_____ - - - - . . WIREWORKING
395 / 77______ - - - - KNOWLEDGE ACQUISITION
395 / 54______ - - - - KNOWLEDGE BASE ACCESSING
000 / ________ - - - - KNOWLEDGE BASE SEE EXPERT SYSTEMS
395 / 10_____+ - - - - KNOWLEDGE PROCESSING
395 / 902____+ - - - - . . APPLICATIONS
395 / 50_____+ - - - - . . EXPERT SYSTEMS
395 / 13______ - - - - . . GENETIC ALGORITHMS
395 / 12______ - - - - . . GRAPHICAL INTERFACE
395 / 12______ - - - - . . NATURAL LANGUAGE INTERFACE
395 / 21_____+ - - - - . . NEURAL NETWORKS
395 / 11______ - - - - . . PLURAL PROCESSING SYSTEMS
395 / 20_____+ - - - - . . TRAINABLE PROCESSING SYSTEMS
395 / 61______ - - - - KNOWLEDGE, INEXACT
213 / 100R___+ - - - - KNUCKLE
072 / 703____* - - - - KNURLING METAL
072 / 191____+ - - - - . . BY ROLLING
029 / DIG 23__ - - - - . . METHODS & APPARATUS
000 / ________ - - - - KRATON T M (SEE SYNTHETIC RESIN OR
000 / ________ - - - - . NATURAL RUBBER)
426 / ________ - - - - KRAUT
426 / 131_____ - - - - . . CANNED
117 / 11_____+ - - - - KYROPOULOS TYPE CRYSTALLIZATION

Information Products Division -- Contacts

Questions regarding this report should be directed to:

U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov

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Last Modified: 24 August 2000