Patenting By Organizations





Top Ten Companies

Calendar Year 1991





This report, prepared from the Technology Assessment and Forecast

(TAF) data base, shows, for U.S. utility patents granted in

calendar year 1991, the ten organizations which received the most

patents.



Patent information included in the report reflects patent

ownership at patent grant and does not include changes in

ownership which occur after the patent grant. Where more than one

assignee exists, patents are attributed to the first-named

assignee.



No attempt has been made to combine data based on subsidiary

relationships. However, where possible, spelling variations and

variations based on name changes (e.g., ESSO to EXXON) have been

merged into a single name. While every effort is made to

accurately identify all organizational entities and report data

by a single organization name, achievement of a totally clean

record is not expected, particularly in view of the variations

which occur in many corporate identifications.









      (Rank in)                                               # of Utility

Rank  ( 1990  )  ORGANIZATION                                      Patents



 1      (2)      Toshiba Corporation                               1014

 2      (4)      Mitsubishi Denki Kabushiki Kaisha                  936

 3      (1)      Hitachi, Ltd.                                      927

 4      (7)      Eastman Kodak Company                              863

 5      (3)      Canon Kabushiki Kaisha                             823

 6      (5)      General Electric Company                           809

 7      (6)      Fuji Photo Film Co., Ltd.                          731

 8      (9)      International Business Machines Corporation        679

 9      (8)      U.S. Philips Corporation (Dutch)                   650

10     (19)      Motorola Inc.                                      613





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SOURCE:  U.S. Patent and Trademark Office

         Technology Assessment and Forecast Program    3-3-92

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(address updated 4/96)

             U.S. Patent and Trademark Office

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             Technology Assessment and Forecast Program

             PK3-Suite 441

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