Détention brevets de la classe E21B 34/08

Brevets de cette classe: 1459

Historique des publications depuis 10 ans

76
82
91
109
121
147
97
80
84
43
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21338
375
Schlumberger Technology Corporation
11818
75
Baker Hughes Oilfield Operations, LLC
2527
72
Saudi Arabian Oil Company
14235
65
Baker Hughes Incorporated
4934
52
Schlumberger Canada Limited
7606
45
Weatherford Technology Holdings, LLC
2155
41
Schlumberger Technology B.v.
5298
39
Services Petroliers Schlumberger
6024
38
Statoil Petroleum AS
469
20
Baker Hughes, a GE Company, LLC
2056
20
Swellfix UK Limited
61
18
Schlumberger Holdings Limited
2699
17
Prad Research and Development Limited
2661
17
Baker Hughes Holdings LLC
3023
16
Flowco Production Solutions, LLC
61
14
Floway Innovations Inc.
14
14
Aramco Services Company
4195
13
ExxonMobil Upstream Research Company
2305
13
BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC)
230
12
Autres propriétaires 483