SCHLUMBERGER TECHNOLOGY CORPORATION |
89 |
112 |
91 |
176 |
148 |
616 |
HALLIBURTON ENERGY SERVICES, INC. |
172 |
122 |
81 |
123 |
104 |
602 |
BAKER HUGHES INCORPORATED |
51 |
77 |
114 |
152 |
122 |
516 |
~INDIVIDUALLY OWNED PATENT |
75 |
82 |
55 |
102 |
69 |
383 |
WEATHERFORD/LAMB, INC. |
63 |
52 |
30 |
51 |
45 |
241 |
SHELL OIL COMPANY |
34 |
27 |
36 |
30 |
21 |
148 |
BJ SERVICES CO |
25 |
18 |
20 |
23 |
6 |
92 |
VETCO GRAY INC |
8 |
9 |
7 |
18 |
18 |
60 |
STINGER WELLHEAD PROTECTION, INC. |
9 |
6 |
10 |
12 |
8 |
45 |
ENVENTURE GLOBAL TECHNOLOGY L.L.C. |
8 |
12 |
8 |
9 |
4 |
41 |
SMITH INTERNATIONAL INC. |
10 |
11 |
3 |
9 |
8 |
41 |
EXXONMOBIL UPSTREAM RESEARCH COMPANY |
1 |
7 |
8 |
12 |
9 |
37 |
TESCO CORP |
4 |
3 |
3 |
18 |
7 |
35 |
CHEVRON U.S.A. INC. |
2 |
1 |
3 |
9 |
8 |
23 |
SPECIALISED PETROLEUM SERVICES GROUP LIMITED |
3 |
7 |
6 |
5 |
2 |
23 |
FMC TECHNOLOGIES, INC. |
8 |
3 |
4 |
2 |
3 |
20 |
VARCO I/P, INC. |
9 |
4 |
2 |
3 |
0 |
18 |
CAMERON INTERNATIONAL CORPORATION |
3 |
6 |
2 |
2 |
4 |
17 |
FRANK'S CASING CREW & RENTAL TOOLS, INC. |
3 |
2 |
2 |
2 |
8 |
17 |
CONOCOPHILLIPS COMPANY |
1 |
2 |
1 |
6 |
6 |
16 |
MAKO RENTALS, INC. |
4 |
0 |
4 |
6 |
2 |
16 |
SAUDI ARABIAN OIL COMPANY |
2 |
6 |
1 |
6 |
0 |
15 |
CDX GAS, LLC |
9 |
4 |
1 |
0 |
0 |
14 |
PRODUCTION CONTROL SERVICES, INC. |
1 |
4 |
4 |
2 |
3 |
14 |
WELLDYNAMICS INC. |
2 |
1 |
2 |
4 |
2 |
11 |
BJ SERVICES COMPANY LLC |
0 |
0 |
0 |
9 |
1 |
10 |
NATIONAL-OILWELL VARCO, L.P. |
0 |
0 |
1 |
5 |
4 |
10 |
PETROQUIP ENERGY SERVICES, LLP |
0 |
5 |
3 |
0 |
2 |
10 |
STREAM-FLO INDUSTRIES LTD. |
0 |
1 |
3 |
2 |
4 |
10 |
CLEARWATER INTERNATIONAL LLC. |
0 |
2 |
2 |
1 |
4 |
9 |
DRIL-QUIP, INC. |
2 |
4 |
2 |
1 |
0 |
9 |
E2 TECH LIMITED |
6 |
1 |
1 |
1 |
0 |
9 |
FRANK'S INTERNATIONAL, INC. |
0 |
2 |
1 |
1 |
5 |
9 |
M-I L.L.C |
2 |
2 |
3 |
2 |
0 |
9 |
PACKERS PLUS ENERGY SERVICES INC. |
0 |
2 |
1 |
3 |
3 |
9 |
KELLOGG BROWN & ROOT LLC |
1 |
1 |
3 |
2 |
1 |
8 |
PINE TREE GAS, LLC |
0 |
0 |
0 |
5 |
3 |
8 |
RHODIA INC. |
0 |
2 |
0 |
6 |
0 |
8 |
STATOIL ASA |
2 |
1 |
1 |
2 |
2 |
8 |
TIW CORPORATION |
2 |
3 |
1 |
1 |
1 |
8 |
WOOD GROUP ESP, INC. |
2 |
5 |
1 |
0 |
0 |
8 |
XTREME COIL DRILLING CORP. |
2 |
2 |
2 |
2 |
0 |
8 |
BP CORPORATION NORTH AMERICA INC. |
0 |
2 |
1 |
2 |
2 |
7 |
BP EXPLORATION OPERATING COMPANY LIMITED |
1 |
1 |
1 |
2 |
2 |
7 |
E. I. DU PONT DE NEMOURS AND COMPANY |
0 |
1 |
0 |
4 |
2 |
7 |
GEOSIERRA, LLC |
0 |
1 |
3 |
1 |
2 |
7 |
HPD, LLC |
0 |
0 |
3 |
1 |
3 |
7 |
HYDRIL USA MANUFACTURING LLC |
0 |
1 |
1 |
3 |
2 |
7 |
OWEN OIL TOOLS LP. |
0 |
2 |
3 |
0 |
2 |
7 |
PRECISION ENERGY SERVICES, INC. |
0 |
1 |
2 |
3 |
1 |
7 |
ROBBINS & MYERS ENERGY SYSTEMS, L.P. |
1 |
1 |
1 |
3 |
1 |
7 |
HUDSON SERVICES, INC. |
0 |
2 |
1 |
1 |
2 |
6 |
HYDRIL COMPANY L.P. |
4 |
2 |
0 |
0 |
0 |
6 |
MARATHON OIL COMPANY |
2 |
2 |
0 |
1 |
1 |
6 |
NORSK HYDRO ASA |
0 |
2 |
2 |
2 |
0 |
6 |
PETROLEO BRASILEIRO S.A. PETROBRAS |
1 |
3 |
1 |
0 |
1 |
6 |
ARCHON TECHNOLOGIES LTD. |
0 |
0 |
2 |
1 |
2 |
5 |
BESST, INC |
0 |
0 |
3 |
1 |
1 |
5 |
DEVIN INTERNATIONAL, INC. |
2 |
1 |
0 |
1 |
1 |
5 |
DUHN OIL TOOL, INC. |
0 |
2 |
2 |
1 |
0 |
5 |
GE IONICS, INC. |
0 |
2 |
0 |
3 |
0 |
5 |
HAMDEEN INCORPORATED LIMITED |
0 |
2 |
1 |
1 |
1 |
5 |
INSTITUT FRANCAIS DU PETROLE |
1 |
1 |
1 |
1 |
1 |
5 |
INTELLISERV, INC. |
5 |
0 |
0 |
0 |
0 |
5 |
LUCA TECHNOLOGIES, INC. |
0 |
1 |
0 |
2 |
2 |
5 |
NATIONAL-OILWELL, L.P. |
2 |
1 |
1 |
0 |
1 |
5 |
OCEAN RISER SYSTEMS AS |
1 |
0 |
2 |
1 |
1 |
5 |
OCEANEERING INTERNATIONAL, INC. |
4 |
0 |
0 |
1 |
0 |
5 |
PIONEER ENERGY, INC. |
0 |
0 |
2 |
3 |
0 |
5 |
PRECISION COMBUSTION, INC. |
0 |
1 |
2 |
1 |
1 |
5 |
RESLINK AS |
2 |
2 |
0 |
1 |
0 |
5 |
TOTAL SEPARATION SOLUTIONS, LLC |
2 |
1 |
2 |
0 |
0 |
5 |
WESTERN WELL TOOL, INC. |
3 |
0 |
2 |
0 |
0 |
5 |