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

Patenting In Technology Classes,
Breakout By Organization

Count of 2009 - 2013 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 2009 2010 2011 2012 2013 Total
SCHLUMBERGER TECHNOLOGY CORPORATION 91 176 148 170 176 761
BAKER HUGHES INCORPORATED 114 152 122 153 144 685
HALLIBURTON ENERGY SERVICES, INC. 81 123 104 151 189 648
~INDIVIDUALLY OWNED PATENT 55 102 69 82 92 400
WEATHERFORD/LAMB, INC. 30 51 45 33 30 189
SHELL OIL COMPANY 36 30 21 26 22 135
VETCO GRAY INC 7 18 18 46 26 115
EXXONMOBIL UPSTREAM RESEARCH COMPANY 8 12 9 17 23 69
BJ SERVICES CO 20 23 6 0 0 49
CHEVRON U.S.A. INC. 3 9 8 7 11 38
CONOCOPHILLIPS COMPANY 1 6 6 5 20 38
SMITH INTERNATIONAL INC. 3 9 8 6 12 38
TESCO CORP 3 18 7 8 2 38
CAMERON INTERNATIONAL CORPORATION 2 2 4 4 23 35
STINGER WELLHEAD PROTECTION, INC. 10 12 8 5 0 35
ENVENTURE GLOBAL TECHNOLOGY L.L.C. 9 9 4 6 3 31
HYDRIL USA MANUFACTURING LLC 1 3 2 10 10 26
NATIONAL-OILWELL VARCO, L.P. 1 5 4 7 8 25
MAKO RENTALS, INC. 4 6 2 6 6 24
SAUDI ARABIAN OIL COMPANY 1 6 0 8 9 24
FRANK'S CASING CREW & RENTAL TOOLS, INC. 2 2 8 8 2 22
BP CORPORATION NORTH AMERICA INC. 1 2 2 5 10 20
E. I. DU PONT DE NEMOURS AND COMPANY 0 4 2 1 12 19
SPECIALISED PETROLEUM SERVICES GROUP LIMITED 6 5 2 3 2 18
SWELLTEC LIMITED 0 1 3 5 9 18
THRU TUBING SOLUTIONS, INC. 0 0 1 3 14 18
RED SPIDER TECHNOLOGY LIMITED 1 1 2 9 1 14
STATOIL ASA 1 2 2 4 5 14
STREAM-FLO INDUSTRIES LTD. 3 2 4 2 3 14
PINE TREE GAS, LLC 0 5 3 4 1 13
CAMERON SYSTEMS (IRELAND) LIMITED 0 0 3 6 3 12
T-3 PROPERTY HOLDINGS, INC. 0 1 0 5 6 12
FRANK'S INTERNATIONAL, INC. 1 1 5 2 2 11
BJ SERVICES COMPANY LLC 0 9 1 0 0 10
FMC TECHNOLOGIES, INC. 4 2 3 1 0 10
M-I L.L.C 3 2 0 1 4 10
PACKERS PLUS ENERGY SERVICES INC. 1 3 3 1 2 10
PETROQUIP ENERGY SERVICES, LLP 3 0 2 4 1 10
VITRUVIAN EXPLORATION, LLC 0 0 1 3 6 10
WORLD ENERGY SYSTEMS, INCORPORATED 0 2 0 4 4 10
BP EXPLORATION OPERATING COMPANY LIMITED 1 2 2 1 3 9
DRIL-QUIP, INC. 2 1 0 3 3 9
PRODUCTION CONTROL SERVICES, INC. 4 2 3 0 0 9
WELLDYNAMICS INC. 2 4 2 1 0 9
ENCANA CORPORATION 2 0 2 3 1 8
GULFSTREAM SERVICES, INC. 1 1 2 3 1 8
3M INNOVATIVE PROPERTIES COMPANY 0 1 0 2 4 7
CLEARWATER INTERNATIONAL LLC. 2 1 4 0 0 7
HPD, LLC 3 1 3 0 0 7
ISOLATION EQUIPMENT SERVICES INC. 2 1 1 2 1 7
OWEN OIL TOOLS LP. 3 0 2 1 1 7
PILOT DRILLING CONTROL LIMITED 0 1 3 1 2 7
PIONEER ENERGY, INC. 2 3 0 0 2 7
PRECISION ENERGY SERVICES, INC. 2 3 1 1 0 7
ROBBINS & MYERS ENERGY SYSTEMS, L.P. 1 3 1 2 0 7
ROBERTSON INTELLECTUAL PROPERTIES, LLC 0 1 3 3 0 7
TECHNIP FRANCE 1 0 0 1 5 7
TIW CORPORATION 1 1 1 2 2 7
VETCO GRAY CONTROLS LIMITED 0 2 1 3 1 7
AKER SUBSEA, INC. 0 1 0 4 1 6
ARCHON TECHNOLOGIES LTD. 2 1 2 1 0 6
BESST, INC 3 1 1 1 0 6
ENOVATE SYSTEMS LIMITED 0 2 2 0 2 6
GEOSIERRA, LLC 3 1 2 0 0 6
HUDSON SERVICES, INC. 1 1 2 1 1 6
INTELLIGENT TOOLS IP, LLC 0 2 1 2 1 6
KELLOGG BROWN & ROOT LLC 3 2 1 0 0 6
LUCA TECHNOLOGIES, INC. 0 2 2 1 1 6
OCEAN RISER SYSTEMS AS 2 1 1 1 1 6
PETROLEO BRASILEIRO S.A. PETROBRAS 1 0 1 1 3 6
PETROWELL LIMITED 0 2 1 0 3 6
RHODIA INC. 0 6 0 0 0 6
WELL MASTER CORP 1 2 0 2 1 6
AKER WELL SERVICE AS 1 0 0 1 3 5
DELAFIELD CORPORATION 0 0 4 0 1 5
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY 0 0 0 2 3 5
INTELLISERV, LLC 0 2 1 2 0 5
PRECISION COMBUSTION, INC. 2 1 1 1 0 5
SIEMENS AKTIENGESELLSCHAFT 0 0 0 2 3 5
SUMMIT DOWNHOLE DYNAMICS, LTD. 0 1 0 0 4 5
SUPERIOR ENERGY SERVICES, L.L.C. 0 2 1 2 0 5
VARCO I/P, INC. 2 3 0 0 0 5
VETCO GRAY SCANDINAVIA AS 1 0 1 3 0 5
XTREME COIL DRILLING CORP. 2 2 0 1 0 5
XTREME DRILLING AND COIL SERVICES CORP. 0 0 0 2 3 5
ZEITECS B. V. 0 0 0 0 5 5



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email: oeip@uspto.gov

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