SCHLUMBERGER TECHNOLOGY CORPORATION |
112 |
91 |
176 |
148 |
170 |
697 |
BAKER HUGHES INCORPORATED |
77 |
114 |
152 |
122 |
153 |
618 |
HALLIBURTON ENERGY SERVICES, INC. |
122 |
81 |
123 |
104 |
151 |
581 |
~INDIVIDUALLY OWNED PATENT |
82 |
55 |
102 |
69 |
82 |
390 |
WEATHERFORD/LAMB, INC. |
52 |
30 |
51 |
45 |
33 |
211 |
SHELL OIL COMPANY |
27 |
36 |
30 |
21 |
26 |
140 |
VETCO GRAY INC |
9 |
7 |
18 |
18 |
46 |
98 |
BJ SERVICES CO |
18 |
20 |
23 |
6 |
0 |
67 |
EXXONMOBIL UPSTREAM RESEARCH COMPANY |
7 |
8 |
12 |
9 |
17 |
53 |
STINGER WELLHEAD PROTECTION, INC. |
6 |
10 |
12 |
8 |
5 |
41 |
ENVENTURE GLOBAL TECHNOLOGY L.L.C. |
12 |
9 |
9 |
4 |
6 |
40 |
TESCO CORP |
3 |
3 |
18 |
7 |
8 |
39 |
SMITH INTERNATIONAL INC. |
11 |
3 |
9 |
8 |
6 |
37 |
CHEVRON U.S.A. INC. |
1 |
3 |
9 |
8 |
7 |
28 |
SPECIALISED PETROLEUM SERVICES GROUP LIMITED |
7 |
6 |
5 |
2 |
3 |
23 |
FRANK'S CASING CREW & RENTAL TOOLS, INC. |
2 |
2 |
2 |
8 |
8 |
22 |
SAUDI ARABIAN OIL COMPANY |
6 |
1 |
6 |
0 |
8 |
21 |
CONOCOPHILLIPS COMPANY |
2 |
1 |
6 |
6 |
5 |
20 |
CAMERON INTERNATIONAL CORPORATION |
6 |
2 |
2 |
4 |
4 |
18 |
MAKO RENTALS, INC. |
0 |
4 |
6 |
2 |
6 |
18 |
HYDRIL USA MANUFACTURING LLC |
1 |
1 |
3 |
2 |
10 |
17 |
NATIONAL-OILWELL VARCO, L.P. |
0 |
1 |
5 |
4 |
7 |
17 |
PETROQUIP ENERGY SERVICES, LLP |
5 |
3 |
0 |
2 |
4 |
14 |
FMC TECHNOLOGIES, INC. |
3 |
4 |
2 |
3 |
1 |
13 |
PRODUCTION CONTROL SERVICES, INC. |
4 |
4 |
2 |
3 |
0 |
13 |
RED SPIDER TECHNOLOGY LIMITED |
0 |
1 |
1 |
2 |
9 |
13 |
BP CORPORATION NORTH AMERICA INC. |
2 |
1 |
2 |
2 |
5 |
12 |
PINE TREE GAS, LLC |
0 |
0 |
5 |
3 |
4 |
12 |
STREAM-FLO INDUSTRIES LTD. |
1 |
3 |
2 |
4 |
2 |
12 |
FRANK'S INTERNATIONAL, INC. |
2 |
1 |
1 |
5 |
2 |
11 |
BJ SERVICES COMPANY LLC |
0 |
0 |
9 |
1 |
0 |
10 |
DRIL-QUIP, INC. |
4 |
2 |
1 |
0 |
3 |
10 |
PACKERS PLUS ENERGY SERVICES INC. |
2 |
1 |
3 |
3 |
1 |
10 |
STATOIL ASA |
1 |
1 |
2 |
2 |
4 |
10 |
WELLDYNAMICS INC. |
1 |
2 |
4 |
2 |
1 |
10 |
CAMERON SYSTEMS (IRELAND) LIMITED |
0 |
0 |
0 |
3 |
6 |
9 |
CLEARWATER INTERNATIONAL LLC. |
2 |
2 |
1 |
4 |
0 |
9 |
SWELLTEC LIMITED |
0 |
0 |
1 |
3 |
5 |
9 |
VARCO I/P, INC. |
4 |
2 |
3 |
0 |
0 |
9 |
E. I. DU PONT DE NEMOURS AND COMPANY |
1 |
0 |
4 |
2 |
1 |
8 |
M-I L.L.C |
2 |
3 |
2 |
0 |
1 |
8 |
OWEN OIL TOOLS LP. |
2 |
3 |
0 |
2 |
1 |
8 |
PRECISION ENERGY SERVICES, INC. |
1 |
2 |
3 |
1 |
1 |
8 |
RHODIA INC. |
2 |
0 |
6 |
0 |
0 |
8 |
ROBBINS & MYERS ENERGY SYSTEMS, L.P. |
1 |
1 |
3 |
1 |
2 |
8 |
TIW CORPORATION |
3 |
1 |
1 |
1 |
2 |
8 |
BP EXPLORATION OPERATING COMPANY LIMITED |
1 |
1 |
2 |
2 |
1 |
7 |
ENCANA CORPORATION |
0 |
2 |
0 |
2 |
3 |
7 |
GEOSIERRA, LLC |
1 |
3 |
1 |
2 |
0 |
7 |
GULFSTREAM SERVICES, INC. |
0 |
1 |
1 |
2 |
3 |
7 |
HPD, LLC |
0 |
3 |
1 |
3 |
0 |
7 |
HUDSON SERVICES, INC. |
2 |
1 |
1 |
2 |
1 |
7 |
KELLOGG BROWN & ROOT LLC |
1 |
3 |
2 |
1 |
0 |
7 |
ROBERTSON INTELLECTUAL PROPERTIES, LLC |
0 |
0 |
1 |
3 |
3 |
7 |
XTREME COIL DRILLING CORP. |
2 |
2 |
2 |
0 |
1 |
7 |
ARCHON TECHNOLOGIES LTD. |
0 |
2 |
1 |
2 |
1 |
6 |
BESST, INC |
0 |
3 |
1 |
1 |
1 |
6 |
GE IONICS, INC. |
2 |
0 |
3 |
0 |
1 |
6 |
ISOLATION EQUIPMENT SERVICES INC. |
0 |
2 |
1 |
1 |
2 |
6 |
LUCA TECHNOLOGIES, INC. |
1 |
0 |
2 |
2 |
1 |
6 |
NORSK HYDRO ASA |
2 |
2 |
2 |
0 |
0 |
6 |
PETROLEO BRASILEIRO S.A. PETROBRAS |
3 |
1 |
0 |
1 |
1 |
6 |
PRECISION COMBUSTION, INC. |
1 |
2 |
1 |
1 |
1 |
6 |
T-3 PROPERTY HOLDINGS, INC. |
0 |
0 |
1 |
0 |
5 |
6 |
VETCO GRAY CONTROLS LIMITED |
0 |
0 |
2 |
1 |
3 |
6 |
VETCO GRAY SCANDINAVIA AS |
1 |
1 |
0 |
1 |
3 |
6 |
WELL MASTER CORP |
1 |
1 |
2 |
0 |
2 |
6 |
WOOD GROUP ESP, INC. |
5 |
1 |
0 |
0 |
0 |
6 |
WORLD ENERGY SYSTEMS, INCORPORATED |
0 |
0 |
2 |
0 |
4 |
6 |
AKER SUBSEA, INC. |
0 |
0 |
1 |
0 |
4 |
5 |
CDX GAS, LLC |
4 |
1 |
0 |
0 |
0 |
5 |
DUHN OIL TOOL, INC. |
2 |
2 |
1 |
0 |
0 |
5 |
HAMDEEN INCORPORATED LIMITED |
2 |
1 |
1 |
1 |
0 |
5 |
INTELLIGENT TOOLS IP, LLC |
0 |
0 |
2 |
1 |
2 |
5 |
INTELLISERV, LLC |
0 |
0 |
2 |
1 |
2 |
5 |
OCEAN RISER SYSTEMS AS |
0 |
2 |
1 |
1 |
1 |
5 |
PILOT DRILLING CONTROL LIMITED |
0 |
0 |
1 |
3 |
1 |
5 |
PIONEER ENERGY, INC. |
0 |
2 |
3 |
0 |
0 |
5 |
SUPERIOR ENERGY SERVICES, L.L.C. |
0 |
0 |
2 |
1 |
2 |
5 |