Home >
PTMD Home >
PTMD Listing of Viewable Reports >
Table of Contents for This Set of Reports
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 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
~Individually Owned Patent |
35 |
43 |
49 |
40 |
48 |
215 |
CATERPILLAR INC. |
6 |
9 |
5 |
6 |
8 |
34 |
HITACHI CONSTRUCTION MACHINERY CO., LTD. |
3 |
4 |
1 |
1 |
2 |
11 |
KOMATSU LTD. |
4 |
1 |
1 |
3 |
2 |
11 |
GH HENSLEY INDUSTRIES, INC. |
2 |
3 |
2 |
2 |
1 |
10 |
CURTIS INTERNATIONAL, INC. |
1 |
0 |
2 |
2 |
3 |
8 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) |
0 |
0 |
0 |
2 |
6 |
8 |
KOBE STEEL LTD. |
2 |
0 |
3 |
2 |
1 |
8 |
BLIZZARD CORPORATION |
0 |
1 |
0 |
2 |
4 |
7 |
H & L TOOTH COMPANY |
3 |
0 |
2 |
1 |
1 |
7 |
HARNISCHFEGER TECHNOLOGIES, INC. |
0 |
0 |
2 |
3 |
2 |
7 |
VERMEER MANUFACTURING COMPANY, INC. |
2 |
0 |
2 |
1 |
2 |
7 |
CLARK EQUIPMENT COMPANY, INC. |
0 |
3 |
3 |
0 |
0 |
6 |
LOUIS BERKMAN COMPANY |
0 |
0 |
3 |
2 |
1 |
6 |
ROCKLAND, INC. |
0 |
0 |
1 |
4 |
1 |
6 |
SHIN CATERPILLAR MITSUBISHI LTD. |
1 |
0 |
2 |
2 |
1 |
6 |
DOUGLAS DYNAMICS, INC. |
2 |
0 |
2 |
1 |
0 |
5 |
ESCO CORPORATION |
1 |
3 |
0 |
0 |
1 |
5 |
SNO-WAY INTERNATIONAL, INC. |
1 |
2 |
2 |
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
ftp download of selected PTMD reports and materials from :
ftp.uspto.gov/pub/taf/
Top
Home >
PTMD Home >
PTMD Listing of Viewable Reports >
Table of Contents for This Set of Reports