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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 037, Excavating

( 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 83 32 41 25 41 44 37 33 38 37 29 31 37 40 29 30 26 32 31 28 43 36 36 43 38 23 31 47 29 35 43 49 40 48 31 34 1330
CATERPILLAR INC. 13 4 9 9 11 11 12 18 19 16 5 7 3 4 0 0 1 3 0 1 2 2 1 3 4 0 12 6 3 6 9 5 6 8 4 2 219
ESCO CORPORATION 0 1 1 2 0 1 1 0 1 0 0 2 2 3 1 3 1 2 3 5 1 2 6 3 1 1 1 0 2 1 3 0 0 1 2 3 56
CASE CORPORATION 0 0 0 0 0 0 1 1 0 1 0 2 3 5 8 1 0 0 0 5 2 0 0 0 3 0 0 1 0 0 0 0 1 0 1 0 35
FRANZ PLASSER BAHNBAUMASCHINEN-INDUSTRIE GMBH 0 0 0 0 1 0 0 0 0 0 0 1 2 1 0 0 0 0 1 0 1 0 3 4 1 1 2 3 1 0 3 1 0 0 3 1 30
CLARK EQUIPMENT COMPANY, INC. 1 2 0 0 3 1 2 3 2 0 1 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 3 3 0 0 1 1 26
GH HENSLEY INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 1 1 1 3 1 1 0 2 3 2 2 1 1 3 26
WESTINGHOUSE AIR BRAKE COMPANY 1 2 1 2 1 3 3 9 1 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 25
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 2 6 7 4 24
DEERE + COMPANY 1 1 2 0 0 0 0 0 2 0 0 0 0 1 2 3 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 0 0 1 3 3 23
HARNISCHFEGER CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 2 0 7 2 7 2 0 0 0 0 0 0 23
KOMATSU LTD. 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 4 1 1 3 2 4 5 21
GENERAL MOTORS CORPORATION 6 1 3 4 0 0 2 3 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 0 0 20
HITACHI CONSTRUCTION MACHINERY CO., LTD. 0 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 2 1 1 3 4 1 1 2 1 3 20
VERMEER MANUFACTURING COMPANY, 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 1 0 1 2 1 2 0 2 1 2 0 6 18
UNIT RIG + EQUIPMENT CO. 0 0 0 0 0 0 0 5 3 1 4 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17
KABUSHIKI KAISHA KOMATSU SEISAKUSHO 0 0 0 0 0 0 1 0 0 1 0 0 1 0 2 1 2 0 1 0 3 0 0 1 0 0 2 0 1 0 0 0 0 0 0 0 16
NAVISTAR INTERNATIONAL TRANSPORTATION CORP. 4 0 2 2 1 0 0 3 1 2 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 0 16
LOUIS BERKMAN COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 2 1 0 1 0 0 0 0 0 3 2 1 3 0 15
DOUGLAS DYNAMICS, INC. 0 0 0 0 0 0 0 0 2 0 0 0 2 0 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 2 0 2 1 0 1 1 14
ALLIS-CHALMERS CORPORATION 3 4 0 1 1 0 0 0 0 0 3 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 13
IHC HOLLAND-LE TOURNEAU MARINE CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 4 4 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
TORO COMPANY 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 1 0 1 1 1 1 0 0 0 0 0 0 2 0 1 13
DEEPSEA VENTURES, INC. 0 0 0 0 0 0 0 0 0 0 2 2 1 4 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
KOBE STEEL LTD. 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 0 1 2 0 2 0 3 2 1 0 0 12
N.V. INDUSTRIEELE HANDELSCOMBINATIE HOLLAND 0 0 1 1 3 3 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 0 0 0 12
ROCKLAND, 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 0 1 2 0 0 1 4 1 2 1 12
BALLAST-NEDAM GROEP N.V. 0 0 0 0 0 1 0 0 1 5 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
MEYER PRODUCTS INC. 3 0 0 2 0 1 0 0 0 0 0 2 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
CURTIS INTERNATIONAL, 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 0 0 0 1 0 2 2 3 2 0 10
H & L TOOTH COMPANY 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 3 0 2 1 1 0 0 10
SHIN CATERPILLAR MITSUBISHI LTD. 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 0 1 0 2 2 1 2 1 10
SNO-WAY INTERNATIONAL, 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 0 1 0 1 2 2 0 0 1 3 10
ABEX CORPORATION 1 0 0 1 1 1 0 0 0 0 0 0 1 0 0 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
BLIZZARD 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 1 0 1 0 2 4 1 0 9
ELLICOTT MACHINE CORPORATION INTERNATIONAL 1 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 9
BECOR WESTERN, INC. 1 2 0 1 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 8
INGENIEURSBUREAU VOOR SYSTEMEM EN OCTROOIEN "SPANSTAAL" 0 0 5 1 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 0 0 0 0 8
HARNISCHFEGER TECHNOLOGIES, 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 0 0 0 0 0 2 3 2 0 0 7
ING. ALFRED SCHMIDT GMBH 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
LOGAN MANUFACTURING COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 3 0 0 0 0 0 0 0 0 0 0 0 0 7
O & K ORENSTEIN & KOPPEL AKTIENGESELLSCHAFT WERK LUBECK 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 7
SAMSUNG HEAVY INDUSTRIES, CO., LTD. 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 1 0 1 3 1 0 0 0 0 0 7
SOCIETE ANONYME POCLAIN LE PLESSIS-BELLEVILLE OISE 1 0 0 0 0 0 5 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 7
TRN BUSINESS TRUST 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 3 2 2 7
CANRON, INC. 0 0 0 0 0 0 1 2 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
CHARLES MACHINE WORKS, INC. 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 0 1 6
CIVES CORP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 0 0 1 1 1 0 6
EAGLE-PICHER INDUSTRIES, 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 4 0 0 0 0 0 1 1 0 0 0 0 6
GILSON BROTHERS COMPANY 0 0 0 0 2 0 0 0 0 2 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
KOBELCO CONSTRUCTION MACHINERY CO., LTD. 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 3 2 1 6
KUBOTA 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 1 0 0 0 1 1 3 6
MONROE TRUCK EQUIPMENT, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 2 0 1 0 0 0 0 6
ORENSTEIN + KOPPEL AKTIENGESELLSCHAFT 0 0 1 1 1 0 1 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 0 6
PENGO CORPORATION 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 0 6
BARBER-GREENE CO. 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 0 5
CMI CORPORATION 0 0 0 0 1 0 2 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 0 0 0 5
COMMISSARIAT A L'ENERGIE ATOMIQUE 0 0 0 0 0 0 0 0 0 0 0 2 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
DRESSER INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 5
FRINK AMERICA, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 5
FRINK SNO-PLOWS, INC. 1 0 1 0 0 0 0 0 2 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 5
JRB COMPANY, 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 0 0 0 0 0 0 0 2 1 2 5
KARL KASSBOHRER FAHREZEUGWERKE GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 5
KERSHAW MANUFACTURING COMPANY, IND. 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
M. J. ELECTRIC, 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 0 1 0 0 0 2 1 1 0 0 5
R. A. HANSON COMPANY, INC. 0 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 1 0 0 0 1 0 0 0 5
TENCO MACHINERY LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 5
WAIN-ROY HOLDING, INC. 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 5


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Skip menu navigation Home > Listing of Viewable PTMD Reports > Table of Contents for This Set of Reports