Détention brevets de la classe E21B 33/035

Brevets de cette classe: 1260

Historique des publications depuis 10 ans

115
133
140
123
92
89
98
74
67
25
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Cameron International Corporation
1306
89
OneSubsea IP UK Limited
381
79
FMC Technologies, Inc.
591
56
FMC Kongsberg Subsea AS
249
51
Aker Solutions AS
228
42
Equinor Energy AS
475
41
Schlumberger Technology Corporation
9759
37
Halliburton Energy Services, Inc.
20182
36
Hydril USA Distribution LLC
212
31
Baker Hughes Energy Technology UK Limited
169
21
Weatherford Technology Holdings, LLC
2106
18
Expro North Sea Limited
215
17
National Oilwell Varco, L.P.
1607
17
Neodrill AS
39
15
Chevron U.S.A. Inc.
3803
14
Aker Subsea AS
130
14
Trendsetter Vulcan Offshore, Inc.
42
14
Schlumberger Canada Limited
6950
13
GE Oil & Gas UK Limited
169
13
Statoil Petroleum AS
553
13
Autres propriétaires 629