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Table of Contents for This Set of Reports
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Listing of Viewable PTMT Reports >
Table of Contents for This Set of Reports
Rank Ordered Listing of Technology Classes Receiving
1
or More Utility Patents During the Period
Originating From
MARYLAND
( patent origin is determined by the residence of the first-named inventor )
( technology class is determined by the primary classification assigned to a patent- see 'Explanation of Data' )
( some classes have been combined together under a single class identifier )
| Class | Class Title | 2011 | 2012 | 2013 | 2014 | 2015 | Total |
|---|---|---|---|---|---|---|---|
| 424 | Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) | 181 | 201 | 213 | 267 | 310 | 1172 |
| 435 | Chemistry: Molecular Biology and Microbiology | 119 | 99 | 103 | 130 | 87 | 538 |
| 705 | DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) | 62 | 78 | 83 | 55 | 20 | 298 |
| 455 | Telecommunications | 49 | 48 | 55 | 65 | 54 | 271 |
| 370 | Multiplex Communications | 48 | 52 | 49 | 58 | 63 | 270 |
| 128 | Surgery (includes Class 600) | 21 | 31 | 47 | 50 | 34 | 183 |
| 532 | Organic Compounds (includes Classes 532-570) | 39 | 44 | 28 | 37 | 30 | 178 |
| 726 | Information Security | 26 | 21 | 33 | 36 | 46 | 162 |
| 709 | Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) | 28 | 36 | 30 | 41 | 26 | 161 |
| 382 | Image Analysis | 16 | 20 | 42 | 33 | 41 | 152 |
| 707 | DP: Database and File Management or Data Structures (Data Processing) | 15 | 22 | 31 | 25 | 36 | 129 |
| 375 | Pulse or Digital Communications | 15 | 15 | 21 | 36 | 31 | 118 |
| 530 | Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof | 32 | 16 | 22 | 26 | 15 | 111 |
| 606 | Surgery (instruments) | 19 | 20 | 24 | 26 | 22 | 111 |
| 701 | DP: Vehicles, Navigation, and Relative Location (Data Processing) | 11 | 16 | 19 | 36 | 28 | 110 |
| 713 | Support (Electrical Computers and Digital Processing Systems) | 21 | 19 | 26 | 24 | 15 | 105 |
| 340 | Communications: Electrical | 23 | 24 | 23 | 16 | 17 | 103 |
| 398 | Optical Communications | 24 | 15 | 18 | 23 | 17 | 97 |
| 422 | Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing | 16 | 17 | 20 | 24 | 17 | 94 |
| 250 | Radiant Energy | 15 | 17 | 20 | 21 | 16 | 89 |
| 702 | DP: Measuring, Calibrating, or Testing (Data Processing) | 15 | 24 | 25 | 14 | 9 | 87 |
| 356 | Optics: Measuring and Testing | 23 | 13 | 20 | 12 | 17 | 85 |
| 714 | Error Detection/Correction and Fault Detection/Recovery | 19 | 16 | 16 | 13 | 15 | 79 |
| 257 | Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) | 10 | 16 | 11 | 16 | 20 | 73 |
| 342 | Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) | 20 | 23 | 11 | 9 | 7 | 70 |
| 073 | Measuring and Testing | 4 | 20 | 14 | 12 | 16 | 66 |
| 436 | Chemistry: Analytical and Immunological Testing | 14 | 13 | 11 | 15 | 11 | 64 |
| 089 | Ordnance | 11 | 12 | 13 | 11 | 14 | 61 |
| 706 | DP: Artificial Intelligence (Data Processing) | 12 | 18 | 8 | 14 | 8 | 60 |
| 428 | Stock Material or Miscellaneous Articles | 9 | 8 | 11 | 12 | 18 | 58 |
| 725 | Interactive Video Distribution Systems | 5 | 10 | 10 | 15 | 16 | 56 |
| 607 | Surgery: Light, Thermal, and Electrical Application | 8 | 12 | 12 | 12 | 10 | 54 |
| 604 | Surgery (Medicators and Receptors) | 13 | 9 | 12 | 9 | 10 | 53 |
| 345 | Computer Graphics Processing and Selective Visual Display Systems | 6 | 8 | 10 | 11 | 17 | 52 |
| 348 | Television | 7 | 5 | 14 | 8 | 18 | 52 |
| 359 | Optical: Systems and Elements | 9 | 9 | 10 | 13 | 7 | 48 |
| 623 | Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor | 6 | 14 | 9 | 9 | 10 | 48 |
| 324 | Electricity: Measuring and Testing | 10 | 9 | 8 | 12 | 8 | 47 |
| 244 | Aeronautics and Astronautics | 9 | 8 | 13 | 7 | 8 | 45 |
| 379 | Telephonic Communications | 7 | 7 | 8 | 10 | 11 | 43 |
| 438 | Semiconductor Device Manufacturing: Process | 13 | 9 | 4 | 10 | 7 | 43 |
| 102 | Ammunition and Explosives | 7 | 8 | 11 | 6 | 10 | 42 |
| 362 | Illumination | 6 | 4 | 12 | 10 | 10 | 42 |
| 700 | DP: Generic Control Systems or Specific Applications (Data Processing) | 8 | 9 | 8 | 7 | 10 | 42 |
| 520 | Synthetic Resins or Natural Rubbers (includes Classes 520-528) | 5 | 8 | 11 | 6 | 10 | 40 |
| 173 | Tool Driving or Impacting | 2 | 9 | 12 | 9 | 7 | 39 |
| 385 | Optical Waveguides | 9 | 9 | 12 | 3 | 5 | 38 |
| 715 | DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) | 4 | 5 | 7 | 9 | 13 | 38 |
| 002 | Apparel | 4 | 9 | 7 | 9 | 8 | 37 |
| 052 | Static Structures (e.g., Buildings) | 4 | 6 | 8 | 11 | 8 | 37 |
| 252 | Compositions | 9 | 6 | 5 | 8 | 9 | 37 |
| 380 | Cryptography | 6 | 3 | 12 | 9 | 7 | 37 |
| 320 | Electricity: Battery or Capacitor Charging or Discharging | 10 | 9 | 3 | 5 | 9 | 36 |
| 434 | Education and Demonstration | 0 | 10 | 12 | 5 | 9 | 36 |
| 084 | Music | 7 | 5 | 7 | 5 | 11 | 35 |
| 198 | Conveyors: Power-Driven | 11 | 5 | 4 | 5 | 10 | 35 |
| 361 | Electricity: Electrical Systems and Devices | 8 | 1 | 7 | 6 | 12 | 34 |
| 280 | Land Vehicles | 6 | 4 | 5 | 5 | 12 | 32 |
| 704 | DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) | 6 | 5 | 6 | 6 | 9 | 32 |
| 210 | Liquid Purification or Separation | 5 | 7 | 7 | 8 | 4 | 31 |
| 029 | Metal Working | 6 | 5 | 5 | 7 | 6 | 29 |
| 235 | Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) | 4 | 3 | 11 | 3 | 8 | 29 |
| 333 | Wave Transmission Lines and Networks | 7 | 4 | 4 | 5 | 9 | 29 |
| 800 | Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes | 4 | 6 | 11 | 5 | 3 | 29 |
| 060 | Power Plants | 2 | 6 | 6 | 8 | 6 | 28 |
| 429 | Chemistry: Electrical Current Producing Apparatus, Product, and Process | 6 | 3 | 6 | 5 | 8 | 28 |
| 307 | Electrical Transmission or Interconnection Systems | 5 | 11 | 4 | 3 | 4 | 27 |
| 310 | Electrical Generator or Motor Structure | 8 | 6 | 5 | 4 | 4 | 27 |
| 473 | Games Using Tangible Projectile | 3 | 5 | 1 | 12 | 6 | 27 |
| 506 | Combinatorial Chemistry Technology: Method, Library, Apparatus | 2 | 3 | 3 | 8 | 11 | 27 |
| 114 | Ships | 7 | 3 | 3 | 9 | 4 | 26 |
| 119 | Animal Husbandry | 9 | 6 | 3 | 3 | 5 | 26 |
| 248 | Supports (e.g., for holding articles, etc.) | 2 | 5 | 7 | 5 | 7 | 26 |
| 482 | Exercise Devices | 0 | 2 | 2 | 9 | 13 | 26 |
| 502 | Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making | 10 | 3 | 4 | 4 | 5 | 26 |
| 717 | DP: Software Development, Installation, and Management (Data Processing) | 5 | 4 | 5 | 6 | 6 | 26 |
| 227 | Elongated-Member-Driving Apparatus | 5 | 5 | 8 | 2 | 5 | 25 |
| 343 | Communications: Radio Wave Antennas | 9 | 6 | 3 | 3 | 4 | 25 |
| 423 | Chemistry of Inorganic Compounds | 1 | 2 | 10 | 5 | 7 | 25 |
| 042 | Firearms | 4 | 5 | 8 | 3 | 4 | 24 |
| 156 | Adhesive Bonding and Miscellaneous Chemical Manufacture | 0 | 10 | 6 | 3 | 5 | 24 |
| 381 | Electrical Audio Signal Processing Systems and Devices | 2 | 7 | 5 | 3 | 7 | 24 |
| 273 | Amusement Devices: Games | 3 | 3 | 11 | 1 | 5 | 23 |
| 297 | Chairs and Seats | 4 | 4 | 1 | 6 | 8 | 23 |
| 451 | Abrading | 6 | 3 | 7 | 3 | 4 | 23 |
| 703 | DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) | 2 | 5 | 6 | 5 | 5 | 23 |
| 220 | Receptacles | 1 | 7 | 3 | 4 | 7 | 22 |
| 315 | Electric Lamp and Discharge Devices: Systems | 2 | 3 | 2 | 6 | 9 | 22 |
| 378 | X-Ray or Gamma Ray Systems or Devices | 5 | 5 | 3 | 4 | 5 | 22 |
| 718 | Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) | 0 | 3 | 4 | 6 | 9 | 22 |
| 015 | Brushing, Scrubbing, and General Cleaning | 6 | 6 | 3 | 2 | 4 | 21 |
| 083 | Cutting | 5 | 4 | 6 | 1 | 5 | 21 |
| 149 | Explosive and Thermic Compositions or Charges | 5 | 3 | 6 | 5 | 2 | 21 |
| 372 | Coherent Light Generators | 5 | 4 | 2 | 2 | 8 | 21 |
| 463 | Amusement Devices: Games | 1 | 7 | 6 | 3 | 3 | 20 |
| 005 | Beds | 4 | 3 | 3 | 4 | 5 | 19 |
| 137 | Fluid Handling | 3 | 3 | 2 | 4 | 7 | 19 |
| 141 | Fluent Material Handling, with Receiver or Receiver Coacting Means | 5 | 5 | 4 | 3 | 2 | 19 |
| 427 | Coating Processes | 3 | 5 | 3 | 4 | 4 | 19 |
| 062 | Refrigeration | 3 | 0 | 3 | 6 | 6 | 18 |
| 239 | Fluid Sprinkling, Spraying, and Diffusing | 0 | 4 | 3 | 5 | 6 | 18 |
| 290 | Prime-Mover Dynamo Plants | 4 | 4 | 3 | 4 | 3 | 18 |
| 326 | Electronic Digital Logic Circuitry | 7 | 4 | 2 | 3 | 2 | 18 |
| 165 | Heat Exchange | 4 | 3 | 2 | 1 | 7 | 17 |
| 180 | Motor Vehicles | 3 | 3 | 3 | 6 | 2 | 17 |
| 426 | Food or Edible Material: Processes, Compositions, and Products | 3 | 2 | 2 | 5 | 5 | 17 |
| 711 | Memory (Electrical Computers and Digital Processing Systems) | 1 | 3 | 4 | 5 | 4 | 17 |
| 004 | Baths, Closets, Sinks, and Spittoons | 4 | 3 | 4 | 4 | 1 | 16 |
| 036 | Boots, Shoes, and Leggings | 2 | 3 | 2 | 3 | 6 | 16 |
| 204 | Chemistry: Electrical and Wave Energy | 4 | 3 | 2 | 4 | 3 | 16 |
| 206 | Special Receptacle or Package | 4 | 2 | 0 | 5 | 5 | 16 |
| 222 | Dispensing (apparatus and process) | 6 | 3 | 2 | 2 | 3 | 16 |
| 117 | Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor | 0 | 3 | 5 | 5 | 2 | 15 |
| 224 | Package and Article Carriers | 1 | 1 | 3 | 7 | 3 | 15 |
| 341 | Coded Data Generation or Conversion | 3 | 1 | 5 | 3 | 3 | 15 |
| 081 | Tools | 3 | 3 | 2 | 1 | 5 | 14 |
| 106 | Compositions: Coating or Plastic | 4 | 1 | 2 | 4 | 3 | 14 |
| 132 | Toilet | 5 | 1 | 3 | 2 | 3 | 14 |
| 264 | Plastic and Nonmetallic Article Shaping or Treating: Processes | 2 | 1 | 6 | 4 | 1 | 14 |
| 318 | Electricity: Motive Power Systems | 2 | 0 | 4 | 3 | 5 | 14 |
| 327 | Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems | 3 | 3 | 4 | 1 | 3 | 14 |
| 351 | Optics: Eye Examining, Vision Testing and Correcting | 2 | 3 | 2 | 5 | 2 | 14 |
| 367 | Communications, Electrical: Acoustic Wave Systems and Devices | 1 | 8 | 1 | 0 | 4 | 14 |
| 030 | Cutlery | 5 | 1 | 2 | 4 | 1 | 13 |
| 208 | Mineral Oils: Processes and Products | 5 | 3 | 2 | 2 | 1 | 13 |
| 510 | Cleaning Compositions for Solid Surfaces, Auxiliary Compositions Therefor, or Processes of Preparing the Compositions | 5 | 3 | 3 | 2 | 0 | 13 |
| 043 | Fishing, Trapping, and Vermin Destroying | 2 | 2 | 2 | 3 | 3 | 12 |
| 123 | Internal-Combustion Engines | 2 | 3 | 1 | 5 | 1 | 12 |
| 219 | Electric Heating | 3 | 2 | 2 | 1 | 4 | 12 |
| 279 | Chucks or Sockets | 3 | 1 | 0 | 5 | 3 | 12 |
| 296 | Land Vehicles: Bodies and Tops | 2 | 2 | 3 | 3 | 2 | 12 |
| 374 | Thermal Measuring and Testing | 2 | 4 | 2 | 1 | 3 | 12 |
| 602 | Surgery: Splint, Brace, or Bandage | 3 | 2 | 4 | 3 | 0 | 12 |
| 027 | Undertaking | 1 | 2 | 1 | 2 | 5 | 11 |
| 124 | Mechanical Guns and Projectors | 1 | 1 | 4 | 3 | 2 | 11 |
| 134 | Cleaning and Liquid Contact with Solids | 0 | 3 | 2 | 4 | 2 | 11 |
| 174 | Electricity: Conductors and Insulators | 1 | 3 | 0 | 1 | 6 | 11 |
| 182 | Fire Escape, Ladder, or Scaffold | 2 | 4 | 1 | 3 | 1 | 11 |
| 241 | Solid Material Comminution or Disintegration | 3 | 5 | 3 | 0 | 0 | 11 |
| 254 | Implements or Apparatus for Applying Pushing or Pulling Force | 4 | 1 | 4 | 1 | 1 | 11 |
| 408 | Cutting by Use of Rotating Axially Moving Tool | 0 | 0 | 2 | 7 | 2 | 11 |
| 601 | Surgery: Kinesitherapy | 3 | 1 | 3 | 3 | 1 | 11 |
| 708 | Arithmetic Processing and Calculating (Electrical Computers) | 0 | 2 | 6 | 2 | 1 | 11 |
| 095 | Gas Separation: Processes | 3 | 5 | 0 | 1 | 1 | 10 |
| 096 | Gas Separation: Apparatus | 2 | 4 | 1 | 2 | 1 | 10 |
| 358 | Facsimile and Static Presentation Processing | 2 | 1 | 1 | 5 | 1 | 10 |
| 439 | Electrical Connectors | 1 | 1 | 6 | 1 | 1 | 10 |
| 475 | Planetary Gear Transmission Systems or Components | 0 | 2 | 3 | 2 | 3 | 10 |
| 033 | Geometrical Instruments | 1 | 4 | 3 | 1 | 0 | 9 |
| 181 | Acoustics | 3 | 2 | 3 | 1 | 0 | 9 |
| 294 | Handling: Hand and Hoist-Line Implements | 1 | 0 | 6 | 0 | 2 | 9 |
| 401 | Coating Implements with Material Supply | 0 | 1 | 2 | 0 | 6 | 9 |
| 405 | Hydraulic and Earth Engineering | 1 | 3 | 2 | 3 | 0 | 9 |
| 074 | Machine Element or Mechanism | 0 | 1 | 2 | 3 | 2 | 8 |
| 136 | Batteries: Thermoelectric and Photoelectric | 0 | 3 | 2 | 2 | 1 | 8 |
| 200 | Electricity: Circuit Makers and Breakers | 2 | 3 | 0 | 2 | 1 | 8 |
| 209 | Classifying, Separating, and Assorting Solids | 0 | 2 | 1 | 3 | 2 | 8 |
| 216 | Etching a Substrate: Processes | 3 | 1 | 2 | 1 | 1 | 8 |
| 228 | Metal Fusion Bonding | 2 | 1 | 1 | 3 | 1 | 8 |
| 261 | Gas and Liquid Contact Apparatus | 0 | 3 | 1 | 1 | 3 | 8 |
| 330 | Amplifiers | 1 | 0 | 2 | 3 | 2 | 8 |
| 417 | Pumps | 3 | 2 | 1 | 0 | 2 | 8 |
| 024 | Buckles, Buttons, Clasps, Etc. | 1 | 1 | 1 | 2 | 2 | 7 |
| 055 | Gas Separation | 1 | 2 | 2 | 2 | 0 | 7 |
| 108 | Horizontally Supported Planar Surfaces | 1 | 2 | 0 | 0 | 4 | 7 |
| 126 | Stoves and Furnaces | 3 | 0 | 1 | 2 | 1 | 7 |
| 205 | Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions | 3 | 1 | 1 | 0 | 2 | 7 |
| 277 | Seal for a Joint or Juncture | 0 | 2 | 3 | 0 | 2 | 7 |
| 406 | Conveyors: Fluid Current | 2 | 1 | 1 | 2 | 1 | 7 |
| 414 | Material or Article Handling | 1 | 2 | 1 | 2 | 1 | 7 |
| 452 | Butchering | 5 | 0 | 1 | 1 | 0 | 7 |
| 505 | Superconductor Technology: Apparatus, Material, Process | 0 | 0 | 3 | 3 | 1 | 7 |
| 016 | Miscellaneous Hardware (e.g., Bushing, Carpet Fastener, Caster, Door Closer, Panel Hanger, Attachable or Adjunct Handle, Hinge, Window Sash Balance, Etc.) | 0 | 2 | 2 | 1 | 1 | 6 |
| 034 | Drying and Gas or Vapor Contact with Solids | 2 | 2 | 1 | 1 | 0 | 6 |
| 047 | Plant Husbandry | 1 | 1 | 0 | 1 | 3 | 6 |
| 048 | Gas: Heating and Illuminating | 0 | 1 | 2 | 1 | 2 | 6 |
| 215 | Bottles and Jars | 1 | 1 | 3 | 1 | 0 | 6 |
| 229 | Envelopes, Wrappers, and Paperboard Boxes | 1 | 2 | 1 | 1 | 1 | 6 |
| 386 | Motion Video Signal Processing for Recording or Reproducing | 0 | 1 | 3 | 0 | 2 | 6 |
| 404 | Road Structure, Process, or Apparatus | 1 | 2 | 1 | 2 | 0 | 6 |
| 415 | Rotary Kinetic Fluid Motors or Pumps | 1 | 1 | 1 | 2 | 1 | 6 |
| 425 | Plastic Article or Earthenware Shaping or Treating: Apparatus | 0 | 2 | 1 | 3 | 0 | 6 |
| 430 | Radiation Imagery Chemistry: Process, Composition, or Product Thereof | 0 | 2 | 1 | 1 | 2 | 6 |
| 433 | Dentistry | 1 | 2 | 1 | 0 | 2 | 6 |
| 450 | Foundation Garments | 1 | 0 | 1 | 2 | 2 | 6 |
| 501 | Compositions: Ceramic | 2 | 2 | 0 | 1 | 1 | 6 |
| 014 | Bridges | 3 | 1 | 1 | 0 | 0 | 5 |
| 086 | Ammunition and Explosive-Charge Making | 1 | 0 | 2 | 1 | 1 | 5 |
| 099 | Foods and Beverages: Apparatus | 0 | 0 | 1 | 0 | 4 | 5 |
| 118 | Coating Apparatus | 1 | 0 | 3 | 0 | 1 | 5 |
| 148 | Metal Treatment | 1 | 3 | 1 | 0 | 0 | 5 |
| 188 | Brakes | 3 | 0 | 2 | 0 | 0 | 5 |
| 719 | Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) | 1 | 0 | 2 | 0 | 2 | 5 |
| 850 | Scanning-Probe Techniques or Apparatus; Applications of Scanning-Probe Techniques, e.g., Scanning Probe Microscopy [Spm] | 0 | 0 | 1 | 1 | 3 | 5 |
| 040 | Card, Picture, or Sign Exhibiting | 1 | 2 | 0 | 1 | 0 | 4 |
| 071 | Chemistry: Fertilizers | 0 | 0 | 1 | 1 | 2 | 4 |
| 075 | Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures | 1 | 0 | 0 | 2 | 1 | 4 |
| 104 | Railways | 2 | 0 | 1 | 1 | 0 | 4 |
| 160 | Flexible or Portable Closure, Partition, or Panel | 1 | 0 | 2 | 0 | 1 | 4 |
| 169 | Fire Extinguishers | 1 | 0 | 0 | 3 | 0 | 4 |
| 223 | Apparel Apparatus | 2 | 0 | 0 | 1 | 1 | 4 |
| 242 | Winding, Tensioning, or Guiding | 0 | 0 | 1 | 0 | 3 | 4 |
| 256 | Fences | 0 | 0 | 0 | 2 | 2 | 4 |
| 269 | Work Holders | 1 | 2 | 0 | 1 | 0 | 4 |
| 285 | Pipe Joints or Couplings | 0 | 1 | 1 | 1 | 1 | 4 |
| 292 | Closure Fasteners | 2 | 0 | 1 | 0 | 1 | 4 |
| 313 | Electric Lamp and Discharge Devices | 1 | 0 | 0 | 2 | 1 | 4 |
| 331 | Oscillators | 0 | 1 | 0 | 1 | 2 | 4 |
| 335 | Electricity: Magnetically Operated Switches, Magnets, and Electromagnets | 1 | 1 | 0 | 1 | 1 | 4 |
| 363 | Electric Power Conversion Systems | 0 | 0 | 1 | 0 | 3 | 4 |
| 365 | Static Information Storage and Retrieval | 0 | 1 | 0 | 1 | 2 | 4 |
| 366 | Agitating (e.g., of articles and materials) | 0 | 2 | 1 | 1 | 0 | 4 |
| 396 | Photography | 2 | 1 | 1 | 0 | 0 | 4 |
| 416 | Fluid Reaction Surfaces (i.e., Impellers) | 0 | 0 | 1 | 0 | 3 | 4 |
| 446 | Amusement Devices: Toys | 1 | 1 | 1 | 1 | 0 | 4 |
| 477 | Interrelated Power Delivery Controls, Including Engine Control | 0 | 2 | 1 | 0 | 1 | 4 |
| 716 | Computer-Aided Design and Analysis of Circuits and Semiconductor Masks | 0 | 1 | 0 | 2 | 1 | 4 |
| 007 | Compound Hand Tools | 0 | 0 | 2 | 1 | 0 | 3 |
| 037 | Excavating | 2 | 0 | 1 | 0 | 0 | 3 |
| 053 | Package Making | 1 | 0 | 0 | 0 | 2 | 3 |
| 056 | Harvesters | 0 | 1 | 1 | 0 | 1 | 3 |
| 063 | Jewelry | 0 | 0 | 1 | 2 | 0 | 3 |
| 065 | Glass Manufacturing | 0 | 0 | 0 | 1 | 2 | 3 |
| 092 | Expansible Chamber Devices | 0 | 2 | 0 | 1 | 0 | 3 |
| 131 | Tobacco | 0 | 2 | 0 | 1 | 0 | 3 |
| 135 | Tent, Canopy, Umbrella, or Cane | 1 | 1 | 1 | 0 | 0 | 3 |
| 144 | Woodworking | 1 | 2 | 0 | 0 | 0 | 3 |
| 152 | Resilient Tires and Wheels | 0 | 1 | 1 | 0 | 1 | 3 |
| 211 | Supports: Racks | 1 | 0 | 0 | 0 | 2 | 3 |
| 236 | Automatic Temperature and Humidity Regulation | 0 | 1 | 0 | 0 | 2 | 3 |
| 271 | Sheet Feeding or Delivering | 2 | 1 | 0 | 0 | 0 | 3 |
| 323 | Electricity: Power Supply or Regulation Systems | 1 | 1 | 0 | 1 | 0 | 3 |
| 353 | Optics: Image Projectors | 0 | 1 | 1 | 1 | 0 | 3 |
| 383 | Flexible Bags | 0 | 1 | 1 | 1 | 0 | 3 |
| 409 | Gear Cutting, Milling, or Planing | 0 | 0 | 0 | 3 | 0 | 3 |
| 411 | Expanded, Threaded, Driven, Headed, Tool-Deformed, or Locked-Threaded Fastener | 1 | 0 | 1 | 1 | 0 | 3 |
| 431 | Combustion | 1 | 0 | 0 | 2 | 0 | 3 |
| 440 | Marine Propulsion | 0 | 2 | 1 | 0 | 0 | 3 |
| 454 | Ventilation | 2 | 0 | 1 | 0 | 0 | 3 |
| 518 | Chemistry: Fischer-Tropsch Processes; or Purification or Recovery of Products Thereof | 1 | 2 | 0 | 0 | 0 | 3 |
| 710 | Input/Output (Electrical Computers and Digital Data Processing Systems) | 1 | 0 | 1 | 0 | 1 | 3 |
| 051 | Abrasive Tool Making Process, Material, or Composition | 0 | 0 | 0 | 1 | 1 | 2 |
| 116 | Signals and Indicators | 1 | 0 | 0 | 0 | 1 | 2 |
| 150 | Purses, Wallets, and Protective Covers | 0 | 0 | 1 | 1 | 0 | 2 |
| 164 | Metal Founding | 0 | 0 | 1 | 0 | 1 | 2 |
| 175 | Boring or Penetrating the Earth | 0 | 0 | 0 | 0 | 2 | 2 |
| 190 | Trunks and Hand-Carried Luggage | 0 | 0 | 2 | 0 | 0 | 2 |
| 192 | Clutches and Power-Stop Control | 2 | 0 | 0 | 0 | 0 | 2 |
| 212 | Traversing Hoists | 0 | 0 | 0 | 1 | 1 | 2 |
| 232 | Deposit and Collection Receptacles | 1 | 0 | 0 | 0 | 1 | 2 |
| 246 | Railway Switches and Signals | 0 | 1 | 0 | 1 | 0 | 2 |
| 355 | Photocopying | 1 | 0 | 1 | 0 | 0 | 2 |
| 368 | Horology: Time Measuring Systems or Devices | 0 | 0 | 1 | 1 | 0 | 2 |
| 392 | Electric Resistance Heating Devices | 1 | 1 | 0 | 0 | 0 | 2 |
| 400 | Typewriting Machines | 0 | 0 | 0 | 0 | 2 | 2 |
| 403 | Joints and Connections | 0 | 0 | 0 | 1 | 1 | 2 |
| 418 | Rotary Expansible Chamber Devices | 0 | 2 | 0 | 0 | 0 | 2 |
| 441 | Buoys, Rafts, and Aquatic Devices | 1 | 0 | 0 | 1 | 0 | 2 |
| 464 | Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts | 0 | 0 | 1 | 1 | 0 | 2 |
| 493 | Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web | 0 | 1 | 0 | 0 | 1 | 2 |
| 504 | Plant Protecting and Regulating Compositions | 0 | 1 | 0 | 0 | 1 | 2 |
| 712 | Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) | 0 | 1 | 1 | 0 | 0 | 2 |
| 023 | Chemistry: Physical Processes | 0 | 0 | 1 | 0 | 0 | 1 |
| 038 | Textiles: Ironing or Smoothing | 0 | 0 | 0 | 0 | 1 | 1 |
| 044 | Fuel and Related Compositions | 0 | 0 | 0 | 0 | 1 | 1 |
| 049 | Movable or Removable Closures | 0 | 0 | 0 | 0 | 1 | 1 |
| 066 | Textiles: Knitting | 0 | 0 | 0 | 1 | 0 | 1 |
| 070 | Locks | 0 | 1 | 0 | 0 | 0 | 1 |
| 091 | Motors: Expansible Chamber Type | 1 | 0 | 0 | 0 | 0 | 1 |
| 105 | Railway Rolling Stock | 0 | 1 | 0 | 0 | 0 | 1 |
| 109 | Safes, Bank Protection, or a Related Device | 1 | 0 | 0 | 0 | 0 | 1 |
| 110 | Furnaces | 0 | 0 | 0 | 0 | 1 | 1 |
| 111 | Planting | 0 | 0 | 0 | 1 | 0 | 1 |
| 112 | Sewing | 0 | 0 | 1 | 0 | 0 | 1 |
| 138 | Pipes and Tubular Conduits | 0 | 0 | 0 | 1 | 0 | 1 |
| 157 | Wheelwright Machines | 0 | 1 | 0 | 0 | 0 | 1 |
| 166 | Wells (shafts or deep borings in the earth, e.g., for oil and gas) | 1 | 0 | 0 | 0 | 0 | 1 |
| 184 | Lubrication | 0 | 0 | 0 | 0 | 1 | 1 |
| 187 | Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle | 0 | 0 | 0 | 1 | 0 | 1 |
| 191 | Electricity: Transmission To Vehicles | 0 | 0 | 1 | 0 | 0 | 1 |
| 203 | Distillation: Processes, Separatory | 0 | 0 | 0 | 1 | 0 | 1 |
| 221 | Article Dispensing | 0 | 0 | 1 | 0 | 0 | 1 |
| 251 | Valves and Valve Actuation | 1 | 0 | 0 | 0 | 0 | 1 |
| 267 | Spring Devices | 0 | 0 | 0 | 0 | 1 | 1 |
| 281 | Books, Strips, and Leaves | 0 | 0 | 1 | 0 | 0 | 1 |
| 283 | Printed Matter | 1 | 0 | 0 | 0 | 0 | 1 |
| 289 | Knots and Knot Tying | 0 | 1 | 0 | 0 | 0 | 1 |
| 293 | Vehicle Fenders | 0 | 1 | 0 | 0 | 0 | 1 |
| 299 | Mining or In Situ Disintegration of Hard Material | 0 | 0 | 0 | 1 | 0 | 1 |
| 329 | Demodulators | 0 | 0 | 0 | 1 | 0 | 1 |
| 332 | Modulators | 0 | 0 | 0 | 1 | 0 | 1 |
| 336 | Inductor Devices | 0 | 0 | 0 | 1 | 0 | 1 |
| 338 | Electrical Resistors | 0 | 0 | 0 | 0 | 1 | 1 |
| 349 | Liquid Crystal Cells, Elements and Systems | 0 | 1 | 0 | 0 | 0 | 1 |
| 376 | Induced Nuclear Reactions: Processes, Systems, and Elements | 0 | 0 | 1 | 0 | 0 | 1 |
| 402 | Binder Device Releasably Engaging Aperture or Notch of Sheet | 0 | 0 | 0 | 1 | 0 | 1 |
| 410 | Freight Accommodation On Freight Carrier | 0 | 0 | 1 | 0 | 0 | 1 |
| 442 | Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, Etc.) | 0 | 0 | 0 | 1 | 0 | 1 |
| 472 | Amusement Devices | 0 | 1 | 0 | 0 | 0 | 1 |
| 474 | Endless Belt Power Transmission Systems or Components | 0 | 0 | 1 | 0 | 0 | 1 |
| 494 | Imperforate Bowl: Centrifugal Separators | 1 | 0 | 0 | 0 | 0 | 1 |
| 507 | Earth Boring, Well Treating, and Oil Field Chemistry | 0 | 0 | 0 | 1 | 0 | 1 |
| 516 | Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting | 0 | 0 | 0 | 1 | 0 | 1 |
| 585 | Chemistry of Hydrocarbon Compounds | 0 | 1 | 0 | 0 | 0 | 1 |
| 588 | Hazardous or Toxic Waste Destruction or Containment | 0 | 0 | 1 | 0 | 0 | 1 |
| ALL | ALL CLASSES | 1513 | 1609 | 1748 | 1851 | 1838 | 8559 |
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Electronic Information Products Division - PTMT
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Alexandria VA 22313-1450tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.govaddress of PTMT pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/reports.htm
selected PTMT materials available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/
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