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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)

U.S. COLLEGES AND UNIVERSITIES-
UTILITY PATENT GRANTS,
CALENDAR YEARS 1969-2005

- 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 200 BY R&D EXPENDITURES IN FY 2004

- 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 200 R&D University:

PURDUE UNIVERSITY

( 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 either distributed by the year of patent grant
or by the year of patent filing. Multiple assignee names may be associated
with a university.
Class Class Title PRE_1985 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Total
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 10 0 0 0 1 0 5 3 0 2 3 3 5 5 6 4 1 5 9 7 2 6 77
532 Organic Compounds (includes Classes 532-570) 29 2 1 0 0 0 0 1 0 1 1 0 1 1 1 2 1 1 1 1 1 1 46
435 Chemistry: Molecular Biology and Microbiology 14 2 0 0 0 0 1 0 2 1 0 2 1 5 4 1 1 0 1 2 2 1 40
210 Liquid Purification or Separation 7 2 1 0 0 0 0 1 0 0 0 0 0 2 1 0 0 0 0 0 1 0 15
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 2 0 0 0 0 0 0 0 0 0 0 0 1 2 1 3 1 0 2 2 1 0 15
607 Surgery: Light, Thermal, and Electrical Application 2 2 1 0 1 1 1 1 1 0 0 0 0 1 0 1 0 0 0 1 0 0 13
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 1 0 0 1 0 0 0 0 1 0 3 1 1 0 1 0 0 0 1 2 0 0 12
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 2 0 1 0 0 0 0 1 0 0 1 0 0 0 1 1 2 1 1 0 0 0 11
128 Surgery (includes Class 600) 3 0 2 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 2 1 10
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 0 1 0 0 0 1 4 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 10
073 Measuring and Testing 4 0 0 0 0 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 9
324 Electricity: Measuring and Testing 3 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 0 1 1 9
250 Radiant Energy 3 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 1 1 8
428 Stock Material or Miscellaneous Articles 2 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2 1 1 1 8
426 Food or Edible Material: Processes, Compositions, and Products 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 7
436 Chemistry: Analytical and Immunological Testing 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3 7
127 Sugar, Starch, and Carbohydrates 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 6
204 Chemistry: Electrical and Wave Energy 1 0 0 0 0 0 1 0 0 0 0 0 0 0 2 0 1 0 0 1 0 0 6
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 6
438 Semiconductor Device Manufacturing: Process 0 0 0 0 0 1 0 0 1 1 0 2 1 0 0 0 0 0 0 0 0 0 6
504 Plant Protecting and Regulating Compositions 3 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 5
310 Electrical Generator or Motor Structure 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 4
333 Wave Transmission Lines and Networks 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 4
385 Optical Waveguides 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 4
047 Plant Husbandry 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
056 Harvesters 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
159 Concentrating Evaporators 2 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 3
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 3
356 Optics: Measuring and Testing 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 3
375 Pulse or Digital Communications 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 3
405 Hydraulic and Earth Engineering 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 3
423 Chemistry of Inorganic Compounds 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
530 Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3
585 Chemistry of Hydrocarbon Compounds 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
604 Surgery (Medicators and Receptors) 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
606 Surgery (instruments) 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 3
702 DP: Measuring, Calibrating, or Testing (Data Processing) 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3
713 Support (Electrical Computers and Digital Processing Systems) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3
106 Compositions: Coating or Plastic 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2
119 Animal Husbandry 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
137 Fluid Handling 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
209 Classifying, Separating, and Assorting Solids 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
359 Optics: Systems and Elements 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2
366 Agitating (e.g., of articles and materials) 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 2
374 Thermal Measuring and Testing 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
382 Image Analysis 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2
427 Coating Processes 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 2
434 Education and Demonstration 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2
029 Metal Working 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1
055 Gas Separation 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
062 Refrigeration 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
074 Machine Element or Mechanism 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
082 Turning (e.g., for metal working) 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
116 Signals and Indicators 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
118 Coating Apparatus 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
123 Internal-Combustion Engines 0 0 0 1 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
134 Cleaning and Liquid Contact with Solids 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
141 Fluent Material Handling, with Receiver or Receiver Coacting Means 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
156 Adhesive Bonding and Miscellaneous Chemical Manufacture 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
188 Brakes 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
203 Distillation: Processes, Separatory 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
205 Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
219 Electric Heating 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
225 Severing by Tearing or Breaking 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
251 Valves and Valve Actuation 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
252 Compositions 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
327 Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
340 Communications: Electrical 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
343 Communications: Radio Wave Antennas 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
345 Computer Graphics Processing and Selective Visual Display Systems 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
347 Incremental Printing of Symbolic Information 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
348 Television 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
360 Dynamic Magnetic Information Storage or Retrieval 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
370 Multiplex Communications 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
372 Coherent Light Generators 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
403 Joints and Connections 1 0 0 0 0 0 0 0 0 0 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
429 Chemistry: Electrical Current Producing Apparatus, Product, and Process 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
460 Crop Threshing or Separating 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
505 Superconductor Technology: Apparatus, Material, Process 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1
703 DP: Structural Design, Modeling, Simulation, and Emulation (Data Processing) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
704 DP: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression (Data Processing) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
708 Arithmetic Processing and Calculating (Electrical Computers) 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
710 Input/Output (Electrical Computers and Digital Processing Systems) 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
726 Information Security 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1
ALL ALL CLASSES 145 18 9 4 2 11 15 11 5 6 11 10 12 24 22 19 11 13 23 22 23 25 441

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