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

Patenting In Technology Classes,
Breakout By Organization

Count of 2010 - 2014 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 166, Wells (shafts or deep borings in the earth, e.g., for oil and gas)

( 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 2010 2011 2012 2013 2014 Total
SCHLUMBERGER TECHNOLOGY CORPORATION 176 148 170 176 164 834
HALLIBURTON ENERGY SERVICES, INC. 123 104 151 189 249 816
BAKER HUGHES INCORPORATED 152 122 153 144 166 737
~INDIVIDUALLY OWNED PATENT 102 69 82 92 116 461
WEATHERFORD/LAMB, INC. 51 45 33 30 49 208
VETCO GRAY INC 18 18 46 26 34 142
SHELL OIL COMPANY 30 21 26 22 25 124
EXXONMOBIL UPSTREAM RESEARCH COMPANY 12 9 17 23 21 82
CAMERON INTERNATIONAL CORPORATION 2 4 4 23 36 69
CONOCOPHILLIPS COMPANY 6 6 5 20 19 56
CHEVRON U.S.A. INC. 9 8 7 11 16 51
SMITH INTERNATIONAL INC. 9 8 6 12 11 46
SAUDI ARABIAN OIL COMPANY 6 0 8 9 19 42
NATIONAL-OILWELL VARCO, L.P. 5 4 7 8 15 39
TESCO CORP 18 7 8 2 4 39
HYDRIL USA MANUFACTURING LLC 3 2 10 10 5 30
BJ SERVICES CO 23 6 0 0 0 29
ENVENTURE GLOBAL TECHNOLOGY L.L.C. 9 4 6 3 4 26
FRANK'S CASING CREW & RENTAL TOOLS, INC. 2 8 8 2 5 25
STINGER WELLHEAD PROTECTION, INC. 12 8 5 0 0 25
MAKO RENTALS, INC. 6 2 6 6 4 24
SWELLTEC LIMITED 1 3 5 9 4 22
THRU TUBING SOLUTIONS, INC. 0 1 3 14 3 21
BP CORPORATION NORTH AMERICA INC. 2 2 5 10 1 20
E. I. DU PONT DE NEMOURS AND COMPANY 4 2 1 12 1 20
SPECIALISED PETROLEUM SERVICES GROUP LIMITED 5 2 3 2 5 17
CAMERON SYSTEMS (IRELAND) LIMITED 0 3 6 3 4 16
M-I L.L.C 2 0 1 4 8 15
PETROWELL LIMITED 2 1 0 3 9 15
HARRIS CORP. 0 0 0 4 10 14
STATOIL ASA 2 2 4 5 1 14
T-3 PROPERTY HOLDINGS, INC. 1 0 5 6 2 14
WORLD ENERGY SYSTEMS, INCORPORATED 2 0 4 4 4 14
PINE TREE GAS, LLC 5 3 4 1 0 13
RED SPIDER TECHNOLOGY LIMITED 1 2 9 1 0 13
FRANK'S INTERNATIONAL, INC. 1 5 2 2 2 12
PACKERS PLUS ENERGY SERVICES INC. 3 3 1 2 3 12
TECHNIP FRANCE 0 0 1 5 6 12
3M INNOVATIVE PROPERTIES COMPANY 1 0 2 4 4 11
STREAM-FLO INDUSTRIES LTD. 2 4 2 3 0 11
BASF SE 0 0 0 4 6 10
BJ SERVICES COMPANY LLC 9 1 0 0 0 10
BP EXPLORATION OPERATING COMPANY LIMITED 2 2 1 3 2 10
GULFSTREAM SERVICES, INC. 1 2 3 1 3 10
VETCO GRAY CONTROLS LIMITED 2 1 3 1 3 10
VITRUVIAN EXPLORATION, LLC 0 1 3 6 0 10
IFP ENERGIES NOUVELLES 0 0 0 4 5 9
PILOT DRILLING CONTROL LIMITED 1 3 1 2 2 9
INTELLISERV, LLC 2 1 2 0 3 8
MAERSK OLIE OG GAS A/S 0 2 1 0 5 8
SIEMENS AKTIENGESELLSCHAFT 0 0 2 3 3 8
SUPERIOR ENERGY SERVICES, L.L.C. 2 1 2 0 3 8
XTREME DRILLING AND COIL SERVICES CORP. 0 0 2 3 3 8
ZEITECS B. V. 0 0 0 5 3 8
ANTELOPE OIL TOOL & MFG. CO., LLC 0 0 0 0 7 7
CLEARWATER INTERNATIONAL LLC. 1 4 0 0 2 7
DRIL-QUIP, INC. 1 0 3 3 0 7
ENCANA CORPORATION 0 2 3 1 1 7
ENOVATE SYSTEMS LIMITED 2 2 0 2 1 7
FMC KONGSBERG SUBSEA AS 2 0 1 0 4 7
FORO ENERGY, INC. 0 0 0 0 7 7
PETROLEUM TECHNOLOGY COMPANY AS 0 0 4 0 3 7
PETROQUIP ENERGY SERVICES, LLP 0 2 4 1 0 7
RHODIA INC. 6 0 0 0 1 7
ROBERTSON INTELLECTUAL PROPERTIES, LLC 1 3 3 0 0 7
S.P.C.M. SA 2 0 1 1 3 7
TIW CORPORATION 1 1 2 2 1 7
TRICAN WELL SERVICE LTD. 1 0 1 2 3 7
VETCO GRAY SCANDINAVIA AS 0 1 3 0 3 7
WELL MASTER CORP 2 0 2 1 2 7
WELLDYNAMICS INC. 4 2 1 0 0 7
AKER SUBSEA, INC. 1 0 4 1 0 6
ENI S.P.A. 0 0 1 3 2 6
FMC TECHNOLOGIES, INC. 2 3 1 0 0 6
INTELLIGENT TOOLS IP, LLC 2 1 2 1 0 6
LUCA TECHNOLOGIES, INC. 2 2 1 1 0 6
OIL STATES ENERGY SERVICES, L.L.C. 0 0 0 0 6 6
REELWELL AS 0 1 2 1 2 6
ROBBINS & MYERS ENERGY SYSTEMS, L.P. 3 1 2 0 0 6
STATOIL PETROLEUM AS 0 0 0 1 5 6
TEAM OIL TOOLS, LP 0 0 1 3 2 6
AKER SUBSEA AS 1 0 0 0 4 5
AKER WELL SERVICE AS 0 0 1 3 1 5
AMERICAN SHALE OIL, LLC 1 1 1 1 1 5
ARTIFICIAL LIFT COMPANY LIMITED 2 0 2 0 1 5
CALFRAC WELL SERVICES LTD. 2 0 0 2 1 5
CANRIG DRILLING TECHNOLOGY LTD. 0 1 0 0 4 5
CHURCHILL DRILLING TOOLS LIMITED 2 1 0 0 2 5
CIRIS ENERGY, INC. 0 0 2 2 1 5
DELAFIELD CORPORATION 0 4 0 1 0 5
EXELIS INC. 0 0 2 1 2 5
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY 0 0 2 3 0 5
GENERAL SYNFUELS INTERNATIONAL, INC. 0 0 3 1 1 5
HUDSON SERVICES, INC. 1 2 1 1 0 5
I-TEC AS 1 0 1 2 1 5
ISOLATION EQUIPMENT SERVICES INC. 1 1 2 1 0 5
JAMES K. AND MARY SANDERS FAMILY LLC 0 0 1 3 1 5
OCEAN RISER SYSTEMS AS 1 1 1 1 1 5
OWEN OIL TOOLS LP. 0 2 1 1 1 5
PETROLEO BRASILEIRO S.A. PETROBRAS 0 1 1 3 0 5
PIONEER ENERGY, INC. 3 0 0 2 0 5
PRECISION ENERGY SERVICES, INC. 3 1 1 0 0 5
PRODUCTION CONTROL SERVICES, INC. 2 3 0 0 0 5
SINGLE BUOY MOORINGS INC. 1 1 1 1 1 5
SUMMIT DOWNHOLE DYNAMICS, LTD. 1 0 0 4 0 5
T & T ENGINEERING SERVICES, INC. 0 1 1 2 1 5
TAM INTERNATIONAL, INC. 2 1 0 1 1 5
TRENDSETTER ENGINEERING, INC. 1 0 0 1 3 5
WWT INTERNATIONAL, INC. 0 1 1 2 1 5



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U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT
P.O Box 1450
Alexandria VA 22313-1450

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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/reports.htm
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