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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting In Technology Classes,
Breakout By Organization

Count of 1998 - 2002 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 416, Fluid Reaction Surfaces (i.e., Impellers)

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant
First-Named Assignee 1998 1999 2000 2001 2002 Total
GENERAL ELECTRIC COMPANY 23 15 28 46 76 188
~Individually Owned Patent 17 29 43 36 42 167
UNITED TECHNOLOGIES CORPORATION 14 13 18 19 9 73
MITSUBISHI HEAVY INDUSTRIES CO., LTD. 3 8 20 10 4 45
EUROCOPTER FRANCE S.A. 6 4 13 4 5 32
ROLLS-ROYCE PLC 2 7 5 7 5 26
SIKORSKY AIRCRAFT CORPORATION 5 4 2 3 3 17
ASEA BROWN BOVERI AKTIENGESELLSCHAFT 2 4 3 3 1 13
BOEING COMPANY 0 0 3 2 7 12
ALSTOM (SWITZERLAND) LTD 0 0 0 0 11 11
EMERSON ELECTRIC CO. 1 1 1 5 3 11
SOCIETE NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION "S.N.E.C.M.A." 4 4 2 1 0 11
KING OF FANS, INC. 0 0 1 6 3 10
ADVANCED TECHNOLOGY INSTITUTE OF COMMUTER-HELICOPTER, LTD. 0 2 2 4 1 9
MCDONNELL DOUGLAS HELICOPTER CO. 2 3 2 2 0 9
ALLIED-SIGNAL INC. 0 0 5 3 0 8
HITACHI, LTD 1 2 1 0 4 8
TOSHIBA CORPORATION 1 0 2 3 2 8
ALOHA HOUSEWARES CO. LTD. 0 1 3 1 2 7
BRUNSWICK CORPORATION 1 1 0 1 4 7
LASKO HOLDINGS, INC. 0 0 4 2 1 7
HUNTER FAN COMPANY 0 3 1 1 1 6
SIEMENS WESTINGHOUSE POWER CORPORATION 0 1 3 2 0 6
BORGWARNER INC. 0 0 0 2 3 5
EUROCOPTER DEUTSCHLAND GMBH 0 0 2 2 1 5
MINKA LIGHTING, INC. 0 1 1 2 1 5
PRATT & WHITNEY CANADA CORP. 0 0 1 2 2 5
SIEMENS AKTIENGESELLSCHAFT 0 1 2 1 1 5
WESTINGHOUSE ELECTRIC CORP. 5 0 0 0 0 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
PK3- Suite 441; P.O Box 1450
Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
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