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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)
Patenting In Technology Classes, Breakout By Organization
Count of 2004 - 2008 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 175, Boring or Penetrating the Earth
( 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
33
33
34
53
47
200
SMITH INTERNATIONAL INC.
27
12
25
23
40
127
HALLIBURTON ENERGY SERVICES, INC.
17
19
27
16
19
98
BAKER HUGHES INCORPORATED
15
13
26
22
20
96
WEATHERFORD/LAMB, INC.
4
13
22
11
4
54
SCHLUMBERGER TECHNOLOGY CORPORATION
9
6
12
11
12
50
SHELL OIL COMPANY
4
3
6
10
11
34
CHARLES MACHINE WORKS, INC.
5
2
6
4
9
26
VARCO I/P, INC.
3
4
6
5
5
23
VERMEER MANUFACTURING COMPANY, INC.
5
4
3
3
1
16
WESTERN WELL TOOL, INC.
4
2
4
3
3
16
SANDVIK INTELLECTUAL PROPERTY AB
0
1
3
6
4
14
HILTI AKTIENGESELLSCHAFT
4
3
3
3
0
13
MERLIN TECHNOLOGY, INC.
0
4
2
5
1
12
CDX GAS, LLC
1
3
4
3
0
11
M-I L.L.C
3
1
3
1
2
10
PATHFINDER ENERGY SERVICES, INC.
1
0
2
3
4
10
TRACTO-TECHNIK GMBH
2
0
3
2
2
9
KENNAMETAL INC.
1
4
0
3
0
8
BAUER MASCHINEN GMBH
1
0
1
4
1
7
TESCO CORP
1
0
4
0
2
7
VAREL INTERNATIONAL, LTD.
1
5
1
0
0
7
"ALWAG" TUNNELAUSBAU GESELLSCHAFT M.B.H
0
0
1
4
1
6
INTELLISERV, INC.
0
1
0
5
0
6
NATIONAL-OILWELL, L.P.
0
0
0
5
1
6
NOBLE DRILLING SERVICES, INC.
1
2
2
1
0
6
GAS TECHNOLOGY INSTITUTE
1
2
2
0
0
5
HARD ROCK DRILLING & FABRICATION, L.L.C.
5
0
0
0
0
5
J. H. FLETCHER & CO., INC.
0
0
0
0
5
5
REEDHYCALOG, L.P.
0
1
2
2
0
5
PTMT Contacts
Questions regarding these reports should be directed to:
U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT
P.O Box 1450
Alexandria VA 22313-1450
tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov
address of PTMT pages at the USPTO Web Site:
http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMT reports and materials from :
ftp.uspto.gov/pub/taf/
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