166 |
Wells (shafts or deep borings in the earth, e.g., for oil and gas) |
26 |
11 |
18 |
9 |
13 |
77 |
128 |
Surgery (includes Class 600) |
9 |
14 |
16 |
11 |
7 |
57 |
424 |
Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) |
13 |
13 |
11 |
9 |
10 |
56 |
114 |
Ships |
15 |
11 |
10 |
4 |
5 |
45 |
073 |
Measuring and Testing |
4 |
3 |
10 |
10 |
9 |
36 |
520 |
Synthetic Resins or Natural Rubbers (includes Classes 520-528) |
5 |
2 |
12 |
6 |
7 |
32 |
405 |
Hydraulic and Earth Engineering |
8 |
7 |
4 |
6 |
6 |
31 |
210 |
Liquid Purification or Separation |
5 |
5 |
6 |
3 |
8 |
27 |
370 |
Multiplex Communications |
1 |
4 |
3 |
6 |
8 |
22 |
532 |
Organic Compounds (includes Classes 532-570) |
5 |
7 |
4 |
3 |
3 |
22 |
175 |
Boring or Penetrating the Earth |
5 |
6 |
2 |
6 |
1 |
20 |
435 |
Chemistry: Molecular Biology and Microbiology |
5 |
1 |
6 |
6 |
2 |
20 |
367 |
Communications, Electrical: Acoustic Wave Systems and Devices |
3 |
5 |
3 |
4 |
4 |
19 |
423 |
Chemistry of Inorganic Compounds |
3 |
2 |
3 |
5 |
4 |
17 |
426 |
Food or Edible Material: Processes, Compositions, and Products |
1 |
5 |
5 |
4 |
1 |
16 |
095 |
Gas Separation: Processes |
5 |
2 |
1 |
4 |
3 |
15 |
356 |
Optics: Measuring and Testing |
0 |
1 |
3 |
4 |
7 |
15 |
060 |
Power Plants |
5 |
1 |
3 |
3 |
2 |
14 |
280 |
Land Vehicles |
0 |
3 |
3 |
4 |
4 |
14 |
702 |
DP: Measuring, Calibrating, or Testing (Data Processing) |
2 |
1 |
2 |
6 |
3 |
14 |
324 |
Electricity: Measuring and Testing |
0 |
3 |
3 |
3 |
4 |
13 |
360 |
Dynamic Magnetic Information Storage or Retrieval |
3 |
1 |
2 |
3 |
4 |
13 |
436 |
Chemistry: Analytical and Immunological Testing |
2 |
2 |
4 |
3 |
2 |
13 |
137 |
Fluid Handling |
2 |
1 |
6 |
3 |
0 |
12 |
385 |
Optical Waveguides |
0 |
2 |
1 |
3 |
5 |
11 |
455 |
Telecommunications |
4 |
1 |
2 |
2 |
2 |
11 |
062 |
Refrigeration |
0 |
3 |
1 |
5 |
1 |
10 |
285 |
Pipe Joints or Couplings |
2 |
5 |
2 |
1 |
0 |
10 |
250 |
Radiant Energy |
1 |
2 |
5 |
0 |
1 |
9 |
379 |
Telephonic Communications |
2 |
2 |
2 |
2 |
1 |
9 |
422 |
Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing |
0 |
2 |
1 |
5 |
1 |
9 |
428 |
Stock Material or Miscellaneous Articles |
2 |
1 |
2 |
3 |
1 |
9 |
604 |
Surgery (Medicators and Receptors) |
4 |
1 |
1 |
2 |
1 |
9 |
029 |
Metal Working |
2 |
1 |
1 |
1 |
3 |
8 |
040 |
Card, Picture, or Sign Exhibiting |
4 |
1 |
2 |
1 |
0 |
8 |
174 |
Electricity: Conductors and Insulators |
2 |
2 |
1 |
1 |
2 |
8 |
219 |
Electric Heating |
1 |
0 |
0 |
4 |
3 |
8 |
340 |
Communications: Electrical |
1 |
5 |
1 |
0 |
1 |
8 |
381 |
Electrical Audio Signal Processing Systems and Devices |
1 |
0 |
3 |
3 |
1 |
8 |
606 |
Surgery (instruments) |
2 |
1 |
3 |
2 |
0 |
8 |
709 |
Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) |
0 |
3 |
2 |
1 |
2 |
8 |
102 |
Ammunition and Explosives |
2 |
0 |
2 |
1 |
2 |
7 |
205 |
Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions |
1 |
2 |
0 |
2 |
2 |
7 |
242 |
Winding, Tensioning, or Guiding |
3 |
3 |
0 |
0 |
1 |
7 |
251 |
Valves and Valve Actuation |
0 |
1 |
1 |
2 |
3 |
7 |
297 |
Chairs and Seats |
2 |
2 |
1 |
2 |
0 |
7 |
074 |
Machine Element or Mechanism |
1 |
0 |
2 |
2 |
1 |
6 |
075 |
Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures |
0 |
3 |
1 |
2 |
0 |
6 |
141 |
Fluent Material Handling, with Receiver or Receiver Coacting Means |
1 |
1 |
1 |
1 |
2 |
6 |
209 |
Classifying, Separating, and Assorting Solids |
1 |
1 |
1 |
2 |
1 |
6 |
254 |
Implements or Apparatus for Applying Pushing or Pulling Force |
3 |
2 |
1 |
0 |
0 |
6 |
257 |
Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) |
0 |
2 |
1 |
1 |
2 |
6 |
365 |
Static Information Storage and Retrieval |
1 |
0 |
0 |
3 |
2 |
6 |
366 |
Agitating (e.g., of articles and materials) |
3 |
3 |
0 |
0 |
0 |
6 |
382 |
Image Analysis |
0 |
1 |
2 |
2 |
1 |
6 |
441 |
Buoys, Rafts, and Aquatic Devices |
2 |
1 |
0 |
2 |
1 |
6 |
502 |
Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making |
1 |
0 |
0 |
3 |
2 |
6 |
005 |
Beds |
1 |
3 |
1 |
0 |
0 |
5 |
015 |
Brushing, Scrubbing, and General Cleaning |
3 |
1 |
0 |
0 |
1 |
5 |
053 |
Package Making |
1 |
3 |
0 |
1 |
0 |
5 |
089 |
Ordnance |
0 |
2 |
2 |
1 |
0 |
5 |
198 |
Conveyors: Power-Driven |
2 |
0 |
1 |
2 |
0 |
5 |
208 |
Mineral Oils: Processes and Products |
0 |
3 |
2 |
0 |
0 |
5 |
239 |
Fluid Sprinkling, Spraying, and Diffusing |
1 |
4 |
0 |
0 |
0 |
5 |
403 |
Joints and Connections |
2 |
0 |
2 |
1 |
0 |
5 |
518 |
Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof |
2 |
0 |
0 |
3 |
0 |
5 |
530 |
Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof |
1 |
1 |
0 |
1 |
2 |
5 |
052 |
Static Structures (e.g., Buildings) |
1 |
2 |
0 |
1 |
0 |
4 |
106 |
Compositions: Coating or Plastic |
1 |
0 |
0 |
1 |
2 |
4 |
123 |
Internal-Combustion Engines |
3 |
0 |
0 |
0 |
1 |
4 |
156 |
Adhesive Bonding and Miscellaneous Chemical Manufacture |
1 |
0 |
3 |
0 |
0 |
4 |
192 |
Clutches and Power-Stop Control |
0 |
1 |
1 |
2 |
0 |
4 |
204 |
Chemistry: Electrical and Wave Energy |
2 |
1 |
0 |
0 |
1 |
4 |
248 |
Supports (e.g., for holding articles, etc.) |
2 |
0 |
2 |
0 |
0 |
4 |
330 |
Amplifiers |
3 |
1 |
0 |
0 |
0 |
4 |
336 |
Inductor Devices |
0 |
1 |
0 |
1 |
2 |
4 |
341 |
Coded Data Generation or Conversion |
0 |
1 |
1 |
1 |
1 |
4 |
414 |
Material or Article Handling |
0 |
1 |
2 |
0 |
1 |
4 |
417 |
Pumps |
1 |
0 |
1 |
2 |
0 |
4 |
439 |
Electrical Connectors |
2 |
1 |
0 |
0 |
1 |
4 |
473 |
Games Using Tangible Projectile |
1 |
2 |
1 |
0 |
0 |
4 |
607 |
Surgery: Light, Thermal, and Electrical Application |
0 |
3 |
1 |
0 |
0 |
4 |
700 |
DP: Generic Control Systems or Specific Applications (Data Processing) |
0 |
0 |
2 |
2 |
0 |
4 |
707 |
DP: Database and File Management or Data Structures (Data Processing) |
0 |
1 |
1 |
2 |
0 |
4 |
715 |
DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) |
1 |
1 |
1 |
0 |
1 |
4 |
004 |
Baths, Closets, Sinks, and Spittoons |
1 |
1 |
0 |
1 |
0 |
3 |
033 |
Geometrical Instruments |
2 |
0 |
0 |
0 |
1 |
3 |
034 |
Drying and Gas or Vapor Contact with Solids |
1 |
1 |
0 |
1 |
0 |
3 |
096 |
Gas Separation: Apparatus |
0 |
2 |
0 |
1 |
0 |
3 |
118 |
Coating Apparatus |
1 |
0 |
1 |
0 |
1 |
3 |
138 |
Pipes and Tubular Conduits |
3 |
0 |
0 |
0 |
0 |
3 |
148 |
Metal Treatment |
0 |
0 |
2 |
1 |
0 |
3 |
164 |
Metal Founding |
0 |
0 |
1 |
0 |
2 |
3 |
194 |
Check-Actuated Control Mechanisms |
1 |
0 |
0 |
0 |
2 |
3 |
215 |
Bottles and Jars |
2 |
0 |
1 |
0 |
0 |
3 |
222 |
Dispensing (apparatus and process) |
1 |
0 |
1 |
1 |
0 |
3 |
264 |
Plastic and Nonmetallic Article Shaping or Treating: Processes |
1 |
0 |
1 |
1 |
0 |
3 |
310 |
Electrical Generator or Motor Structure |
1 |
0 |
2 |
0 |
0 |
3 |
345 |
Computer Graphics Processing and Selective Visual Display Systems |
1 |
0 |
1 |
1 |
0 |
3 |
353 |
Optics: Image Projectors |
0 |
0 |
1 |
2 |
0 |
3 |
361 |
Electricity: Electrical Systems and Devices |
2 |
0 |
1 |
0 |
0 |
3 |
362 |
Illumination |
0 |
0 |
0 |
1 |
2 |
3 |
373 |
Industrial Electric Heating Furnaces |
2 |
0 |
0 |
0 |
1 |
3 |
374 |
Thermal Measuring and Testing |
0 |
0 |
1 |
1 |
1 |
3 |
404 |
Road Structure, Process, or Apparatus |
1 |
0 |
2 |
0 |
0 |
3 |
415 |
Rotary Kinetic Fluid Motors or Pumps |
1 |
0 |
1 |
0 |
1 |
3 |
429 |
Chemistry: Electrical Current Producing Apparatus, Product, and Process |
0 |
1 |
1 |
1 |
0 |
3 |
433 |
Dentistry |
0 |
1 |
0 |
0 |
2 |
3 |
434 |
Education and Demonstration |
2 |
0 |
1 |
0 |
0 |
3 |
440 |
Marine Propulsion |
0 |
1 |
0 |
0 |
2 |
3 |
002 |
Apparel |
0 |
0 |
1 |
1 |
0 |
2 |
024 |
Buckles, Buttons, Clasps, Etc. |
0 |
0 |
0 |
0 |
2 |
2 |
030 |
Cutlery |
0 |
0 |
1 |
0 |
1 |
2 |
037 |
Excavating |
0 |
0 |
0 |
0 |
2 |
2 |
043 |
Fishing, Trapping, and Vermin Destroying |
0 |
0 |
1 |
0 |
1 |
2 |
049 |
Movable or Removable Closures |
0 |
1 |
1 |
0 |
0 |
2 |
055 |
Gas Separation |
0 |
0 |
0 |
2 |
0 |
2 |
071 |
Chemistry: Fertilizers |
2 |
0 |
0 |
0 |
0 |
2 |
072 |
Metal Deforming |
1 |
1 |
0 |
0 |
0 |
2 |
092 |
Expansible Chamber Devices |
1 |
1 |
0 |
0 |
0 |
2 |
100 |
Presses |
0 |
1 |
1 |
0 |
0 |
2 |
108 |
Horizontally Supported Planar Surfaces |
0 |
0 |
1 |
0 |
1 |
2 |
110 |
Furnaces |
0 |
1 |
0 |
0 |
1 |
2 |
119 |
Animal Husbandry |
0 |
0 |
1 |
0 |
1 |
2 |
150 |
Purses, Wallets, and Protective Covers |
0 |
0 |
1 |
0 |
1 |
2 |
165 |
Heat Exchange |
1 |
0 |
1 |
0 |
0 |
2 |
172 |
Earth Working |
1 |
0 |
1 |
0 |
0 |
2 |
180 |
Motor Vehicles |
0 |
1 |
1 |
0 |
0 |
2 |
181 |
Acoustics |
1 |
0 |
1 |
0 |
0 |
2 |
200 |
Electricity: Circuit Makers and Breakers |
1 |
0 |
1 |
0 |
0 |
2 |
206 |
Special Receptacle or Package |
0 |
0 |
0 |
1 |
1 |
2 |
220 |
Receptacles |
2 |
0 |
0 |
0 |
0 |
2 |
228 |
Metal Fusion Bonding |
0 |
1 |
1 |
0 |
0 |
2 |
229 |
Envelopes, Wrappers, and Paperboard Boxes |
2 |
0 |
0 |
0 |
0 |
2 |
235 |
Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) |
0 |
0 |
0 |
0 |
2 |
2 |
241 |
Solid Material Comminution or Disintegration |
0 |
0 |
0 |
2 |
0 |
2 |
244 |
Aeronautics and Astronautics |
0 |
1 |
1 |
0 |
0 |
2 |
252 |
Compositions |
0 |
0 |
0 |
1 |
1 |
2 |
266 |
Metallurgical Apparatus |
0 |
1 |
1 |
0 |
0 |
2 |
267 |
Spring Devices |
2 |
0 |
0 |
0 |
0 |
2 |
277 |
Seal for a Joint or Juncture |
0 |
1 |
0 |
0 |
1 |
2 |
290 |
Prime-Mover Dynamo Plants |
0 |
0 |
0 |
1 |
1 |
2 |
293 |
Vehicle Fenders |
0 |
2 |
0 |
0 |
0 |
2 |
312 |
Supports: Cabinet Structure |
0 |
1 |
1 |
0 |
0 |
2 |
327 |
Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems |
0 |
1 |
1 |
0 |
0 |
2 |
342 |
Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) |
0 |
0 |
0 |
1 |
1 |
2 |
358 |
Facsimile and Static Presentation Processing |
0 |
0 |
2 |
0 |
0 |
2 |
359 |
Optics: Systems and Elements |
1 |
0 |
0 |
0 |
1 |
2 |
363 |
Electric Power Conversion Systems |
0 |
0 |
0 |
0 |
2 |
2 |
375 |
Pulse or Digital Communications |
0 |
0 |
1 |
1 |
0 |
2 |
392 |
Electric Resistance Heating Devices |
1 |
0 |
1 |
0 |
0 |
2 |
398 |
Optical Communications |
0 |
0 |
1 |
1 |
0 |
2 |
418 |
Rotary Expansible Chamber Devices |
1 |
1 |
0 |
0 |
0 |
2 |
420 |
Alloys or Metallic Compositions |
0 |
0 |
1 |
1 |
0 |
2 |
438 |
Semiconductor Device Manufacturing: Process |
1 |
0 |
1 |
0 |
0 |
2 |
446 |
Amusement Devices: Toys |
0 |
1 |
0 |
0 |
1 |
2 |
451 |
Abrading |
0 |
1 |
1 |
0 |
0 |
2 |
452 |
Butchering |
1 |
0 |
1 |
0 |
0 |
2 |
477 |
Interrelated Power Delivery Controls, Including Engine Control |
0 |
0 |
1 |
1 |
0 |
2 |
482 |
Exercise Devices |
0 |
1 |
1 |
0 |
0 |
2 |
703 |
DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) |
0 |
1 |
0 |
0 |
1 |
2 |
719 |
Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) |
0 |
1 |
0 |
0 |
1 |
2 |
014 |
Bridges |
0 |
1 |
0 |
0 |
0 |
1 |
016 |
Miscellaneous Hardware |
1 |
0 |
0 |
0 |
0 |
1 |
023 |
Chemistry: Physical Processes |
0 |
1 |
0 |
0 |
0 |
1 |
027 |
Undertaking |
0 |
0 |
0 |
1 |
0 |
1 |
036 |
Boots, Shoes, and Leggings |
1 |
0 |
0 |
0 |
0 |
1 |
047 |
Plant Husbandry |
0 |
0 |
0 |
0 |
1 |
1 |
070 |
Locks |
0 |
0 |
0 |
0 |
1 |
1 |
081 |
Tools |
0 |
0 |
0 |
0 |
1 |
1 |
083 |
Cutting |
0 |
1 |
0 |
0 |
0 |
1 |
086 |
Ammunition and Explosive-Charge Making |
0 |
1 |
0 |
0 |
0 |
1 |
104 |
Railways |
0 |
1 |
0 |
0 |
0 |
1 |
122 |
Liquid Heaters and Vaporizers |
0 |
1 |
0 |
0 |
0 |
1 |
125 |
Stone Working |
0 |
0 |
1 |
0 |
0 |
1 |
126 |
Stoves and Furnaces |
1 |
0 |
0 |
0 |
0 |
1 |
132 |
Toilet |
0 |
0 |
0 |
1 |
0 |
1 |
134 |
Cleaning and Liquid Contact with Solids |
0 |
1 |
0 |
0 |
0 |
1 |
149 |
Explosive and Thermic Compositions or Charges |
1 |
0 |
0 |
0 |
0 |
1 |
162 |
Paper Making and Fiber Liberation |
1 |
0 |
0 |
0 |
0 |
1 |
182 |
Fire Escape, Ladder, or Scaffold |
0 |
1 |
0 |
0 |
0 |
1 |
191 |
Electricity: Transmission To Vehicles |
1 |
0 |
0 |
0 |
0 |
1 |
202 |
Distillation: Apparatus |
1 |
0 |
0 |
0 |
0 |
1 |
211 |
Supports: Racks |
0 |
0 |
0 |
1 |
0 |
1 |
216 |
Etching a Substrate: Processes |
0 |
0 |
0 |
1 |
0 |
1 |
221 |
Article Dispensing |
0 |
0 |
1 |
0 |
0 |
1 |
224 |
Package and Article Carriers |
0 |
1 |
0 |
0 |
0 |
1 |
226 |
Advancing Material of Indeterminate Length |
1 |
0 |
0 |
0 |
0 |
1 |
237 |
Heating Systems |
1 |
0 |
0 |
0 |
0 |
1 |
249 |
Static Molds |
1 |
0 |
0 |
0 |
0 |
1 |
294 |
Handling: Hand and Hoist-Line Implements |
0 |
1 |
0 |
0 |
0 |
1 |
301 |
Land Vehicles: Wheels and Axles |
0 |
0 |
0 |
1 |
0 |
1 |
315 |
Electric Lamp and Discharge Devices: Systems |
0 |
0 |
0 |
1 |
0 |
1 |
343 |
Communications: Radio Wave Antennas |
0 |
0 |
0 |
0 |
1 |
1 |
348 |
Television |
0 |
0 |
0 |
1 |
0 |
1 |
351 |
Optics: Eye Examining, Vision Testing and Correcting |
0 |
0 |
1 |
0 |
0 |
1 |
369 |
Dynamic Information Storage or Retrieval |
0 |
1 |
0 |
0 |
0 |
1 |
372 |
Coherent Light Generators |
0 |
0 |
0 |
1 |
0 |
1 |
378 |
X-Ray or Gamma Ray Systems or Devices |
1 |
0 |
0 |
0 |
0 |
1 |
380 |
Cryptography |
1 |
0 |
0 |
0 |
0 |
1 |
400 |
Typewriting Machines |
1 |
0 |
0 |
0 |
0 |
1 |
408 |
Cutting by Use of Rotating Axially Moving Tool |
1 |
0 |
0 |
0 |
0 |
1 |
416 |
Fluid Reaction Surfaces (i.e., Impellers) |
0 |
0 |
1 |
0 |
0 |
1 |
425 |
Plastic Article or Earthenware Shaping or Treating: Apparatus |
0 |
0 |
1 |
0 |
0 |
1 |
427 |
Coating Processes |
0 |
1 |
0 |
0 |
0 |
1 |
430 |
Radiation Imagery Chemistry: Process, Composition, or Product Thereof |
0 |
0 |
1 |
0 |
0 |
1 |
431 |
Combustion |
0 |
1 |
0 |
0 |
0 |
1 |
445 |
Electric Lamp or Space Discharge Component or Device Manufacturing |
0 |
0 |
0 |
0 |
1 |
1 |
454 |
Ventilation |
1 |
0 |
0 |
0 |
0 |
1 |
501 |
Compositions: Ceramic |
0 |
1 |
0 |
0 |
0 |
1 |
585 |
Chemistry of Hydrocarbon Compounds |
0 |
0 |
0 |
1 |
0 |
1 |
601 |
Surgery: Kinesitherapy |
0 |
0 |
0 |
0 |
1 |
1 |
602 |
Surgery: Splint, Brace, or Bandage |
1 |
0 |
0 |
0 |
0 |
1 |
701 |
DP: Vehicles, Navigation, and Relative Location (Data Processing) |
0 |
0 |
0 |
1 |
0 |
1 |
705 |
DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) |
0 |
1 |
0 |
0 |
0 |
1 |
710 |
Input/Output (Electrical Computers and Digital Processing Systems) |
0 |
0 |
0 |
1 |
0 |
1 |
711 |
Memory (Electrical Computers and Digital Processing Systems) |
0 |
0 |
0 |
0 |
1 |
1 |
713 |
Support (Electrical Computers and Digital Processing Systems) |
0 |
1 |
0 |
0 |
0 |
1 |
717 |
DP: Software Development, Installation, and Management (Data Processing) |
0 |
1 |
0 |
0 |
0 |
1 |
726 |
Information Security |
0 |
0 |
1 |
0 |
0 |
1 |
800 |
Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes |
0 |
0 |
1 |
0 |
0 |
1 |
ALL |
ALL CLASSES |
265 |
242 |
262 |
243 |
220 |
1232 |