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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 1969 - 2004 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 279, Chucks or Sockets

( 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 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Total
~Individually Owned Patent 19 23 20 21 28 19 15 12 10 17 6 21 18 5 9 9 19 24 20 11 14 16 19 18 16 16 15 13 10 14 19 12 19 12 15 3 557
POWER TOOL HOLDERS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 7 2 16 11 6 11 9 10 5 80
BLACK & DECKER INC. 2 0 0 1 0 0 0 1 1 0 2 0 4 0 0 0 1 0 1 0 1 0 1 0 1 0 0 0 0 0 1 2 3 2 3 1 28
HARDINGE BROTHERS INC. 0 1 1 4 3 2 1 1 0 0 0 0 2 1 1 1 0 0 0 0 1 0 0 2 1 1 1 0 0 0 0 0 0 0 0 0 24
PAUL FORKARDT KOMMANDITGESELLSCHAFT 4 3 1 5 0 2 3 0 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23
ERICKSON TOOL COMPANY 5 4 2 1 3 3 2 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22
HILTI AKTIENGESELLSCHAFT 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 3 3 2 1 0 1 0 1 0 0 0 2 1 0 1 0 0 3 0 21
JACOBS CHUCK TECHNOLOGY CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 4 6 7 1 0 0 0 0 0 0 0 0 21
ROBERT BOSCH GMBH 0 0 0 1 2 0 1 1 1 3 0 0 2 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 0 0 1 1 1 1 2 0 21
ROHM GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 5 8 1 19
HOUDAILLE INDUSTRIES, INC. 2 0 2 3 3 2 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14
SMW SCHNEIDER & WEISSHAUPT GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 4 2 2 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 14
JACOBS MANUFACTURING COMPANY LIMITED 0 0 0 0 1 2 1 2 0 4 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
XEROX CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 1 0 4 2 1 0 0 0 0 13
S-P MANUFACTURING CORPORATION 4 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 2 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
SHEFFER COLLET COMPANY 0 0 0 0 0 0 0 0 0 1 0 2 0 1 2 0 0 1 2 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 11
WOODWORTH, N. A., COMPANY 6 1 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
BUCK TOOL COMPANY 1 1 0 0 2 2 0 1 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
GLEASON WORKS 3 1 1 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 10
CUSHMAN INDUSTRIES, INCORPORATED 0 0 2 0 2 1 0 0 1 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
KENNAMETAL INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 2 1 1 0 1 1 0 0 0 0 9
PAUL FORKARDT GMBH & CO. KG 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 2 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 9
ILLINOIS TOOL WORKS INC. 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 2 0 0 0 0 0 1 1 0 8
WARNER + SWASEY COMPANY 1 0 1 0 0 1 1 1 0 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
YUKIWA SEIKO KABUSHIKI KAISHA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 1 2 0 1 1 8
CATERPILLAR INC. 0 2 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
SANDVIK TOBLER S.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 1 0 3 0 0 7
CHUM POWER MACHINERY CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 1 0 1 0 6
EMUGE-WERK RICHARD GLIMPEL FABRIK FUR PRAZISIONSWERKZEUGE VO 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 6
HOWA MACHINERY, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 0 1 1 0 6
INTERNATIONAL BUSINESS MACHINES CORPORATION 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 6
BRYANT GRINDER CORPORATION 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 5
DOUBLE E COMPANY, INC. 0 0 0 0 0 0 0 2 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
DUNHAM TOOL COMPANY, INC. 0 1 0 1 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
EMERSON ELECTRIC CO. 1 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
PRATT BURNERD INTERNATIONAL LIMITED 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
S-B POWER TOOL COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 1 1 5
SMC CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 1 0 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
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
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


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