U.S. PATENT AND TRADEMARK OFFICE
Information Products Division
Technology Assessment and Forecast (TAF) Branch

U.S. COLLEGES AND UNIVERSITIES-
UTILITY PATENT GRANTS,
CALENDAR YEARS 1969-2000

- 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 100 BY R&D EXPENDITURES IN FY 1999

- 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 100 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' )
 
Class Class Title PRE_1980 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 Total
424 Drug, Bio-Affecting and Body Treating Compositions (includes Class 514) 6 1 1 0 2 0 0 0 0 1 0 4 3 0 2 3 3 5 5 6 4 1 47
532 Organic Compounds (includes Classes 532-570) 23 1 2 0 2 1 2 1 0 0 0 0 1 0 1 1 0 1 1 1 2 1 41
435 Chemistry: Molecular Biology and Microbiology 3 1 2 4 1 3 2 0 0 0 0 1 0 2 1 0 2 1 5 4 1 1 34
210 Liquid Purification or Separation 2 1 1 3 0 0 2 1 0 0 0 0 1 0 0 0 0 0 2 1 0 0 14
607 Surgery: Light, Thermal, and Electrical Application 0 0 1 0 0 1 2 1 0 1 1 1 1 1 0 0 0 0 1 0 1 0 12
800 Multicellular Living Organisms and Unmodified Parts Thereof and Related Processes 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 3 1 10
257 Active Solid-State Devices (e.g., Transistors, Solid-State Diodes) 0 1 0 0 0 0 0 0 1 0 0 0 0 1 0 3 1 1 0 1 0 0 9
623 Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor 1 1 0 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 1 1 2 9
073 Measuring and Testing 2 0 1 0 1 0 0 0 0 0 3 0 1 0 0 0 0 0 0 0 0 0 8
520 Synthetic Resins or Natural Rubbers (includes Classes 520-528) 0 0 0 0 0 0 1 0 0 0 1 4 0 0 0 1 0 0 0 1 0 0 8
128 Surgery (includes Class 600) 1 0 0 0 0 2 0 2 0 0 0 0 0 0 0 0 1 0 0 0 1 0 7
250 Radiant Energy 1 0 0 1 0 1 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 6
324 Electricity: Measuring and Testing 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 6
438 Semiconductor Device Manufacturing: Process 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 2 1 0 0 0 0 6
127 Sugar, Starch, and Carbohydrates 1 0 2 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
204 Chemistry: Electrical and Wave Energy 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 2 0 1 5
504 Plant Protecting and Regulating Compositions 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 5
333 Wave Transmission Lines and Networks 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 4
422 Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4
426 Food or Edible Material: Processes, Compositions, and Products 2 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
047 Plant Husbandry 2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
056 Harvesters 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
159 Concentrating Evaporators 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 3
264 Plastic and Nonmetallic Article Shaping or Treating: Processes 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 3
356 Optics: Measuring and Testing 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 3
375 Pulse or Digital Communications 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3
405 Hydraulic and Earth Engineering 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 3
423 Chemistry of Inorganic Compounds 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
428 Stock Material or Miscellaneous Articles 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 3
436 Chemistry: Analytical and Immunological Testing 2 0 0 0 0 0 1 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 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 3
585 Chemistry of Hydrocarbon Compounds 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 3
604 Surgery (Medicators and Receptors) 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
606 Surgery (instruments) 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 3
106 Compositions: Coating or Plastic 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 2
119 Animal Husbandry 0 0 0 0 0 1 0 0 1 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 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
374 Thermal Measuring and Testing 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 2
701 DP: Vehicles, Navigation, and Relative Location (Data Processing) 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2
702 DP: Measuring, Calibrating, or Testing (Data Processing) 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2
001 ** Classification Undetermined ** 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1
029 Metal Working 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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 0 0 0 0 0 1 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
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 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1
126 Stoves and Furnaces 0 0 0 0 0 1 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 0 0 0 0 0 1 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 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
203 Distillation: Processes, Separatory 0 0 0 1 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
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
310 Electrical Generator or Motor Structure 0 0 0 0 0 1 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 0 0 0 0 0 1 1
343 Communications: Radio Wave Antennas 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1
345 Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
348 Television 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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
366 Agitating (e.g., of articles and materials) 0 0 0 0 1 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 0 0 0 0 0 1 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
434 Education and Demonstration 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
455 Telecommunications 0 1 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 0 0 0 1 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 0 0 0 0 0 1 0 1
708 Arithmetic Processing and Calculating (Electrical Computers) 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1
710 Input/Output (Electrical Computers and Digital Processing Systems) 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
ALL ALL CLASSES 81 13 15 11 11 14 18 9 4 2 11 15 11 5 6 11 10 12 24 22 19 11 335



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Last Modified: May 22, 2002