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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Patenting In Technology Classes,
Breakout By Organization

Count of 2006 - 2010 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.
First-Named Assignee 2006 2007 2008 2009 2010 Total
~INDIVIDUALLY OWNED PATENT 34 53 47 58 67 259
SMITH INTERNATIONAL INC. 25 23 40 21 50 159
BAKER HUGHES INCORPORATED 26 22 20 35 55 158
HALLIBURTON ENERGY SERVICES, INC. 27 16 19 17 7 86
SCHLUMBERGER TECHNOLOGY CORPORATION 12 11 12 10 32 77
WEATHERFORD/LAMB, INC. 22 11 4 1 8 46
SHELL OIL COMPANY 6 10 11 5 3 35
CHARLES MACHINE WORKS, INC. 6 4 9 4 2 25
VARCO I/P, INC. 6 5 5 5 2 23
SANDVIK INTELLECTUAL PROPERTY AB 3 6 4 2 2 17
U.S. SYNTHETIC CORPORATION 0 0 0 8 8 16
HILTI AKTIENGESELLSCHAFT 3 3 0 8 1 15
TESCO CORP 4 0 2 5 4 15
VERMEER MANUFACTURING COMPANY, INC. 3 3 1 2 5 14
WESTERN WELL TOOL, INC. 4 3 3 3 1 14
MERLIN TECHNOLOGY, INC. 2 5 1 2 2 12
BAUER MASCHINEN GMBH 1 4 1 3 2 11
M-I L.L.C 3 1 2 1 4 11
PATHFINDER ENERGY SERVICES, INC. 2 3 4 0 0 9
CDX GAS, LLC 4 3 0 0 0 7
NATIONAL-OILWELL VARCO, L.P. 0 0 0 3 4 7
TRACTO-TECHNIK GMBH 3 2 2 0 0 7
"ALWAG" TUNNELAUSBAU GESELLSCHAFT M.B.H 1 4 1 0 0 6
APS TECHNOLOGY, INC. 0 2 2 0 2 6
ATLAS COPCO ROCK DRILLS AB 0 0 1 0 5 6
J. H. FLETCHER & CO., INC. 0 0 5 1 0 6
LONGYEAR TM, INC. 0 0 0 1 5 6
NATIONAL-OILWELL, L.P. 0 5 1 0 0 6
ATLAS COPCO SECOROC AB 1 1 2 0 1 5
EAGLE ROCK MANUFACTURING, LLC 0 0 0 4 1 5
INTELLISERV, INC. 0 5 0 0 0 5
KENNAMETAL INC. 0 3 0 1 1 5
PARTICLE DRILLING TECHNOLOGIES, INC. 0 0 4 1 0 5
SANDVIK MINING AND CONSTRUCTION OY 0 0 1 1 3 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
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/


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