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

Patenting In Technology Classes,
Breakout By Organization

Count of 2005 - 2009 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 2005 2006 2007 2008 2009 Total
~INDIVIDUALLY OWNED PATENT 33 34 53 47 58 225
SMITH INTERNATIONAL INC. 12 25 23 40 21 121
BAKER HUGHES INCORPORATED 13 26 22 20 35 116
HALLIBURTON ENERGY SERVICES, INC. 19 27 16 19 17 98
SCHLUMBERGER TECHNOLOGY CORPORATION 6 12 11 12 10 51
WEATHERFORD/LAMB, INC. 13 22 11 4 1 51
SHELL OIL COMPANY 3 6 10 11 5 35
CHARLES MACHINE WORKS, INC. 2 6 4 9 4 25
VARCO I/P, INC. 4 6 5 5 5 25
HILTI AKTIENGESELLSCHAFT 3 3 3 0 8 17
SANDVIK INTELLECTUAL PROPERTY AB 1 3 6 4 2 16
WESTERN WELL TOOL, INC. 2 4 3 3 3 15
MERLIN TECHNOLOGY, INC. 4 2 5 1 2 14
VERMEER MANUFACTURING COMPANY, INC. 4 3 3 1 2 13
TESCO CORP 0 4 0 2 5 11
CDX GAS, LLC 3 4 3 0 0 10
BAUER MASCHINEN GMBH 0 1 4 1 3 9
PATHFINDER ENERGY SERVICES, INC. 0 2 3 4 0 9
KENNAMETAL INC. 4 0 3 0 1 8
M-I L.L.C 1 3 1 2 1 8
U.S. SYNTHETIC CORPORATION 0 0 0 0 8 8
TRACTO-TECHNIK GMBH 0 3 2 2 0 7
"ALWAG" TUNNELAUSBAU GESELLSCHAFT M.B.H 0 1 4 1 0 6
INTELLISERV, INC. 1 0 5 0 0 6
J. H. FLETCHER & CO., INC. 0 0 0 5 1 6
NATIONAL-OILWELL, L.P. 0 0 5 1 0 6
VAREL INTERNATIONAL, LTD. 5 1 0 0 0 6
COMPAGNIE DU SOL 3 1 0 0 1 5
NOBLE DRILLING SERVICES, INC. 2 2 1 0 0 5
PARTICLE DRILLING TECHNOLOGIES, INC. 0 0 0 4 1 5
REEDHYCALOG, L.P. 1 2 2 0 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
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/


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