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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

U.S. COLLEGES AND UNIVERSITIES-
UTILITY PATENT GRANTS,
CALENDAR YEARS 1969-2008

- this report has been prepared with support from the National Science Foundation -

BREAKOUT BY TECHNOLOGY CLASS -
PATENTS DISTRIBUTED BY CALENDAR YEAR OF GRANT

NUMBER OF UTILITY PATENTS ASSIGNED ANNUALLY
TO U.S. COLLEGES AND UNIVERSITIES RANKED IN THE
TOP 250 BY R&D EXPENDITURES IN FY 2007

- Explanation of Data -

Rank Ordered Listing of Technology Classes Receiving 1 or More Utility Patents During the Period

This Table Displays Patent Counts By Technology Class
For Patents Granted To The Following Top 250 R&D University:

MASSACHUSETTS INSTITUTE OF TECHNOLOGY

( count of patent grants, as distributed by calendar year of grant )
( technology class is determined by the primary patent classification - see 'Explanation of Data' )

Annual patent counts for the university.
Counts of granted patents are distributed by the year of patent grant
Multiple assignee names may be associated with a university.
Class Class Title PRE_1988 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Total
435 Chemistry: Molecular Biology and Microbiology 51 4 6 8 5 6 11 1 2 10 12 15 11 6 13 6 9 9 10 15 9 12 231
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 52 5 8 12 6 7 6 6 1 10 11 9 11 7 8 5 7 7 10 9 7 10 214
532 Organic Compounds (includes Classes 532-570) 39 2 2 4 8 8 5 9 3 5 0 2 1 5 2 5 1 5 8 8 4 1 127
385 Optical Waveguides 3 0 1 0 2 0 1 0 0 2 0 2 2 4 1 6 9 8 10 21 22 11 105
359 Optical: Systems and Elements 21 1 5 1 4 6 6 1 2 1 4 3 3 4 2 7 6 7 6 3 7 4 104
372 Coherent Light Generators 22 3 5 5 6 11 4 5 6 4 2 4 2 3 4 1 2 3 1 0 2 3 98
438 Semiconductor Device Manufacturing: Process 22 5 7 2 4 6 6 3 2 0 1 0 4 1 4 4 1 5 6 3 4 4 94
128 Surgery (includes Class 600) 8 5 3 7 3 4 3 4 4 3 2 6 7 8 3 6 2 6 5 1 3 0 93
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 17 0 1 2 2 5 4 4 1 2 3 5 1 2 1 5 4 2 7 5 5 4 82
250 Radiant Energy 20 0 4 2 4 3 1 1 1 0 2 1 3 1 4 4 5 7 4 3 3 5 78
356 Optics: Measuring and Testing 15 1 1 4 1 0 1 3 4 0 2 3 6 6 2 6 5 2 6 0 1 5 74
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 15 5 4 3 4 4 3 0 2 3 3 3 5 4 3 1 2 0 0 3 1 1 69
073 Measuring and Testing 24 1 3 3 1 2 1 1 0 3 3 2 1 1 4 3 1 2 3 1 1 1 62
428 Stock Material or Miscellaneous Articles 17 3 1 1 1 0 0 2 0 1 1 1 2 3 2 1 4 2 3 3 5 6 59
382 Image Analysis 1 0 0 1 0 3 1 2 1 5 8 8 5 1 6 3 3 1 1 3 0 3 56
324 Electricity: Measuring and Testing 15 1 3 3 2 0 2 0 1 3 2 2 5 5 2 2 0 0 2 1 0 1 52
117 Single-Crystal, Oriented-Crystal, and Epitaxy Growth Processes; Non-Coating Apparatus Therefor 18 0 5 0 3 4 2 3 0 2 2 0 1 2 0 0 2 3 0 0 1 0 48
310 Electrical Generator or Motor Structure 23 0 1 2 0 3 1 2 0 0 0 0 2 2 4 0 1 1 0 0 1 2 45
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 6 2 3 2 1 2 2 1 0 2 1 2 3 0 2 4 1 1 2 2 2 0 41
427 Coating Processes 9 3 4 2 3 1 0 1 0 1 0 1 2 2 4 1 2 0 1 0 2 1 40
348 Television 7 1 1 1 6 2 1 2 3 0 0 1 2 0 1 3 1 0 1 0 1 0 34
375 Pulse or Digital Communications 4 0 0 1 1 0 2 2 4 3 2 1 0 1 1 0 4 1 0 2 2 1 32
430 Radiation Imagery Chemistry: Process, Composition, or Product Thereof 4 0 0 1 0 1 0 3 0 0 0 0 1 1 0 2 2 7 5 1 3 1 32
204 Chemistry: Electrical and Wave Energy 13 1 1 0 2 1 3 0 4 2 0 0 1 0 0 0 0 0 1 1 0 1 31
345 Computer Graphics Processing and Selective Visual Display Systems 4 0 0 0 0 0 3 1 2 3 0 5 2 0 3 1 1 0 3 2 0 1 31
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 6 2 0 0 3 2 0 0 1 3 1 2 1 2 4 0 0 1 1 0 0 1 30
333 Wave Transmission Lines and Networks 12 0 0 1 0 0 2 1 1 0 1 0 2 1 0 0 2 1 3 0 2 0 29
365 Static Information Storage and Retrieval 24 0 2 0 0 0 0 0 2 0 0 0 0 1 0 0 0 0 0 0 0 0 29
436 Chemistry: Analytical and Immunological Testing 8 1 2 0 1 0 1 0 0 1 2 0 1 0 0 2 0 3 2 2 2 1 29
604 Surgery (Medicators and Receptors) 3 1 1 0 1 1 0 0 2 1 1 2 3 2 0 0 0 3 2 3 0 3 29
341 Coded Data Generation or Conversion 4 0 0 0 1 0 0 0 0 3 0 0 1 3 3 2 2 1 2 3 0 3 28
136 Batteries: Thermoelectric and Photoelectric 17 0 0 0 0 0 0 0 1 0 0 0 1 1 0 1 2 2 0 0 1 1 27
398 Optical Communications 3 0 0 1 2 0 0 0 0 0 2 1 1 0 2 3 5 2 0 2 1 1 26
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 7 1 0 5 1 1 0 2 2 1 1 1 0 0 2 0 0 0 0 0 0 1 25
423 Chemistry of Inorganic Compounds 7 0 0 1 0 0 2 0 1 2 0 0 2 2 1 1 0 0 1 2 2 1 25
164 Metal Founding 7 0 0 1 0 0 0 1 1 2 1 2 2 2 1 2 1 0 1 0 0 0 24
318 Electricity: Motive Power Systems 13 1 0 0 0 0 1 2 0 1 1 1 1 0 0 1 0 0 0 0 1 0 23
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 6 0 0 1 0 2 0 1 0 0 0 2 1 0 1 2 2 1 2 1 1 0 23
711 Memory (Electrical Computers and Digital Processing Systems) 7 0 0 1 0 0 2 0 0 1 0 1 1 0 0 1 2 2 0 2 2 1 23
340 Communications: Electrical 4 0 0 1 0 0 0 1 1 1 0 0 0 1 1 2 1 3 0 2 2 2 22
219 Electric Heating 9 0 0 0 3 1 1 0 2 0 1 1 1 0 0 1 1 0 0 0 0 0 21
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 2 1 0 0 2 0 0 1 1 0 0 0 0 1 1 1 0 1 2 0 4 4 21
505 Superconductor Technology: Apparatus, Material, Process 0 0 1 3 1 1 6 0 1 3 1 1 1 1 1 0 0 0 0 0 0 0 21
606 Surgery (instruments) 4 1 1 3 1 2 1 3 0 1 1 0 0 0 2 0 0 1 0 0 0 0 21
700 DP: Generic Control Systems or Specific Applications (Data Processing) 2 0 0 1 1 1 2 1 0 1 0 1 1 1 1 0 2 3 0 0 3 0 21
708 Arithmetic Processing and Calculating (Electrical Computers) 11 1 1 1 0 3 0 1 0 2 0 0 1 0 0 0 0 0 0 0 0 0 21
210 Liquid Purification or Separation 12 1 1 0 1 0 0 0 0 1 0 2 0 1 1 0 0 0 0 0 0 0 20
370 Multiplex Communications 1 2 0 0 0 0 0 0 1 1 1 0 0 2 2 1 1 1 2 1 1 3 20
712 Processing Architectures and Instruction Processing, e.g., Processors (Electrical Computers and Digital Processing Systems) 2 0 0 1 1 1 1 0 2 4 0 1 2 1 1 1 0 1 0 1 0 0 20
123 Internal-Combustion Engines 1 0 0 0 1 1 1 1 2 0 0 0 1 0 0 0 1 2 1 2 3 2 19
148 Metal Treatment 11 1 1 0 0 0 1 0 1 0 0 0 1 1 0 1 1 0 0 0 0 0 19
342 Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation) 1 0 0 2 1 2 0 2 1 1 0 0 2 0 1 2 2 1 0 0 0 1 19
252 Compositions 5 0 0 0 1 0 0 0 0 0 0 0 0 0 4 1 0 0 1 2 1 3 18
075 Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures 8 1 0 0 0 0 1 1 0 1 2 1 0 0 0 1 0 0 0 1 0 0 17
216 Etching a Substrate: Processes 3 1 3 0 2 0 0 0 2 1 0 0 0 3 0 0 0 1 0 0 1 0 17
702 DP: Measuring, Calibrating, or Testing (Data Processing) 0 0 2 0 0 1 0 0 0 0 1 0 1 0 0 0 2 0 0 3 4 3 17
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 2 0 2 1 1 0 0 1 1 0 3 2 1 0 1 0 0 0 0 0 1 1 17
378 X-Ray or Gamma Ray Systems or Devices 7 0 1 0 0 1 1 0 1 0 0 2 0 0 0 0 0 0 2 0 0 1 16
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 7 0 0 0 0 1 1 0 0 1 1 1 0 0 0 0 0 0 1 1 0 1 15
376 Induced Nuclear Reactions: Processes, Systems, and Elements 5 0 0 0 0 0 1 0 1 0 0 1 3 0 2 0 0 0 1 0 0 0 14
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 5 0 1 1 0 0 0 0 1 0 0 0 0 0 0 1 1 0 1 1 0 1 13
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 1 0 0 0 0 0 0 1 2 1 1 0 0 0 0 2 0 1 1 1 1 1 13
715 DP: Presentation Processing of Document, Operator Interface Processing, and Screen Saver Display Processing (Data Processing) 0 0 0 0 0 1 0 0 0 0 1 3 1 1 0 1 1 0 0 2 2 0 13
060 Power Plants 4 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 2 0 0 1 2 12
419 Powder Metallurgy Processes 1 0 1 0 0 0 1 1 1 0 0 0 1 1 0 0 2 1 0 1 1 0 12
506 Combinatorial Chemistry Technology: Method, Library, Apparatus 0 0 0 0 0 0 0 0 0 0 1 1 2 0 4 2 1 0 0 0 0 1 12
707 DP: Database and File Management or Data Structures (Data Processing) 0 0 0 0 0 1 0 0 0 0 0 4 0 1 1 3 0 1 1 0 0 0 12
709 Multicomputer Data Transferring (Electrical Computers and Digital Processing Systems) 0 0 1 0 0 0 0 1 0 0 0 0 0 2 0 2 2 0 1 2 1 0 12
029 Metal Working 2 0 0 0 0 1 0 1 1 1 1 0 0 0 0 2 1 0 0 0 1 0 11
313 Electric Lamp and Discharge Devices 4 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 0 1 1 1 0 1 11
118 Coating Apparatus 5 1 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 10
361 Electricity: Electrical Systems and Devices 5 0 0 1 0 0 0 1 0 1 1 0 0 0 0 0 0 0 1 0 0 0 10
374 Thermal Measuring and Testing 2 0 1 0 0 1 0 0 1 0 1 1 1 0 0 0 0 0 1 0 1 0 10
607 Surgery: Light, Thermal, and Electrical Application 0 0 0 1 0 0 1 0 3 2 0 1 0 0 0 0 0 0 0 0 1 1 10
315 Electric Lamp and Discharge Devices: Systems 4 0 0 0 0 1 0 0 0 0 0 2 1 0 0 0 1 0 0 0 0 0 9
343 Communications: Radio Wave Antennas 1 0 0 0 0 0 1 0 1 0 0 0 1 0 0 2 0 1 0 0 1 1 9
363 Electric Power Conversion Systems 2 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 2 0 0 0 9
369 Dynamic Information Storage or Retrieval 0 0 1 0 0 0 0 0 0 0 1 3 0 0 1 0 3 0 0 0 0 0 9
455 Telecommunications 3 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 2 0 0 0 1 9
062 Refrigeration 1 0 1 0 0 0 0 0 0 0 0 2 0 0 1 0 1 0 0 1 0 1 8
165 Heat Exchange 6 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
307 Electrical Transmission or Interconnection Systems 8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
426 Food or Edible Material: Processes, Compositions, and Products 5 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 8
714 Error Detection/Correction and Fault Detection/Recovery 1 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 2 0 0 1 1 0 8
052 Static Structures (e.g., Buildings) 2 0 0 0 0 0 0 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 7
180 Motor Vehicles 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 1 1 2 0 0 0 7
335 Electricity: Magnetically Operated Switches, Magnets, and Electromagnets 2 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 1 0 7
349 Liquid Crystal Cells, Elements and Systems 0 0 1 0 0 0 0 0 0 0 0 2 2 0 1 1 0 0 0 0 0 0 7
351 Optics: Eye Examining, Vision Testing and Correcting 1 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1 1 0 0 7
381 Electrical Audio Signal Processing Systems and Devices 1 0 0 2 0 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 0 1 7
501 Compositions: Ceramic 1 0 0 1 1 2 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 7
502 Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1 1 1 0 0 1 0 7
585 Chemistry of Hydrocarbon Compounds 3 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 7
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 1 1 2 0 0 0 0 7
074 Machine Element or Mechanism 2 0 0 1 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
104 Railways 5 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 6
174 Electricity: Conductors and Insulators 4 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 6
209 Classifying, Separating, and Assorting Solids 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
326 Electronic Digital Logic Circuitry 2 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 1 6
330 Amplifiers 3 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 6
367 Communications, Electrical: Acoustic Wave Systems and Devices 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 1 0 0 0 1 6
380 Cryptography 1 0 0 1 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0 1 0 0 6
601 Surgery: Kinesitherapy 0 0 0 3 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 1 6
706 DP: Artificial Intelligence (Data Processing) 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 1 1 0 6
716 DP: Design and Analysis of Circuit or Semiconductor Mask (Data Processing) 0 0 0 0 0 0 1 0 0 1 2 1 0 0 0 1 0 0 0 0 0 0 6
137 Fluid Handling 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 5
188 Brakes 2 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 5
347 Incremental Printing of Symbolic Information 4 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 5
358 Facsimile and Static Presentation Processing 2 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0 0 5
360 Dynamic Magnetic Information Storage or Retrieval 2 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 5
417 Pumps 2 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 5
434 Education and Demonstration 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 1 0 0 0 0 1 0 5
710 Input/Output (Electrical Computers and Digital Processing Systems) 1 0 1 0 0 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 5
713 Support (Electrical Computers and Digital Processing Systems) 0 0 0 1 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 5
084 Music 2 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 4
181 Acoustics 2 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 4
244 Aeronautics and Astronautics 1 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 4
251 Valves and Valve Actuation 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 4
323 Electricity: Power Supply or Regulation Systems 1 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 4
331 Oscillators 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
355 Photocopying 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 4
366 Agitating (e.g., of articles and materials) 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
377 Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems 1 0 0 0 0 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 4
415 Rotary Kinetic Fluid Motors or Pumps 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 0 0 0 1 0 0 4
420 Alloys or Metallic Compositions 2 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
425 Plastic Article or Earthenware Shaping or Treating: Apparatus 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 4
602 Surgery: Splint, Brace, or Bandage 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 4
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 1 0 0 0 0 0 4
717 DP: Software Development, Installation, and Management (Data Processing) 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 4
033 Geometrical Instruments 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 3
082 Turning (e.g., for metal working) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 3
095 Gas Separation: Processes 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
114 Ships 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 3
134 Cleaning and Liquid Contact with Solids 1 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 3
139 Textiles: Weaving 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 3
200 Electricity: Circuit Makers and Breakers 1 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
222 Dispensing (apparatus and process) 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 3
235 Registers (e.g., cash registers, calculators, devices for counting movements of devices, etc.) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 3
384 Bearings 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 3
405 Hydraulic and Earth Engineering 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
451 Abrading 0 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
705 DP: Financial, Business Practice, Management, or Cost/Price Determination (Data Processing) 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 3
718 Virtual Machine Task or Process Management or Task Management/Control (Electrical Computers and Digital Processing Systems) 2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
726 Information Security 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 0 3
044 Fuel and Related Compositions 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 2
048 Gas: Heating and Illuminating 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
065 Glass Manufacturing 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
092 Expansible Chamber Devices 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
096 Gas Separation: Apparatus 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
101 Printing 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2
106 Compositions: Coating or Plastic 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2
175 Boring or Penetrating the Earth 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2
241 Solid Material Comminution or Disintegration 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
248 Supports (e.g., for holding articles, etc.) 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2
261 Gas and Liquid Contact Apparatus 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2
267 Spring Devices 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2
277 Seal for a Joint or Juncture 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 2
290 Prime-Mover Dynamo Plants 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2
322 Electricity: Single Generator Systems 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 2
336 Inductor Devices 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
338 Electrical Resistors 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
352 Optics: Motion Pictures 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
362 Illumination 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 2
368 Horology: Time Measuring Systems or Devices 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 2
403 Joints and Connections 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 2
416 Fluid Reaction Surfaces (i.e., Impellers) 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
439 Electrical Connectors 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 2
440 Marine Propulsion 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 2
452 Butchering 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
463 Amusement Devices: Games 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
473 Games Using Tangible Projectile 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
719 Interprogram Communication or Interprocess Communication (Ipc) (Electrical Computers and Digital Processing Systems) 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 2
005 Beds 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1
014 Bridges 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
015 Brushing, Scrubbing, and General Cleaning 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
024 Buckles, Buttons, Clasps, Etc. 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
034 Drying and Gas or Vapor Contact with Solids 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
040 Card, Picture, or Sign Exhibiting 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
043 Fishing, Trapping, and Vermin Destroying 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
051 Abrasive Tool Making Process, Material, or Composition 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
070 Locks 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1
072 Metal Deforming 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
099 Foods and Beverages: Apparatus 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
110 Furnaces 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
119 Animal Husbandry 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
122 Liquid Heaters and Vaporizers 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
124 Mechanical Guns and Projectors 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
126 Stoves and Furnaces 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1
166 Wells (shafts or deep borings in the earth, e.g., for oil and gas) 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
194 Check-Actuated Control Mechanisms 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
208 Mineral Oils: Processes and Products 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
218 High-Voltage Switches with Arc Preventing or Extinguishing Devices 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
228 Metal Fusion Bonding 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
236 Automatic Temperature and Humidity Regulation 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
239 Fluid Sprinkling, Spraying, and Diffusing 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
249 Static Molds 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
254 Implements or Apparatus for Applying Pushing or Pulling Force 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
260 Chemistry of Carbon Compounds 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
266 Metallurgical Apparatus 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
280 Land Vehicles 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1
283 Printed Matter 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1
294 Handling: Hand and Hoist-Line Implements 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
297 Chairs and Seats 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
329 Demodulators 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
332 Modulators 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1
337 Electricity: Electrothermally or Thermally Actuated Switches 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1
353 Optics: Image Projectors 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
373 Industrial Electric Heating Furnaces 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1
414 Material or Article Handling 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
431 Combustion 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1
432 Heating 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
441 Buoys, Rafts, and Aquatic Devices 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
445 Electric Lamp or Space Discharge Component or Device Manufacturing 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
494 Imperforate Bowl: Centrifugal Separators 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
516 Colloid Systems and Wetting Agents, Subcombinations Thereof, Processes of Making, Stabilizing, Breaking, or Inhibiting 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
725 Interactive Video Distribution Systems 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
ALL ALL CLASSES 835 64 101 109 101 125 112 99 104 119 102 138 142 113 125 135 127 132 136 139 141 134 3333

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selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/

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