Détention brevets de la classe E21B 34/08

Brevets de cette classe: 1387

Historique des publications depuis 10 ans

66
69
72
84
97
108
119
81
66
57
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20944
354
Schlumberger Technology Corporation
10868
67
Baker Hughes Oilfield Operations, LLC
2320
62
Saudi Arabian Oil Company
13349
60
Baker Hughes Incorporated
5251
52
Weatherford Technology Holdings, LLC
2029
43
Schlumberger Canada Limited
7363
42
Schlumberger Technology B.v.
5187
36
Services Petroliers Schlumberger
5827
35
Statoil Petroleum AS
524
20
Baker Hughes, a GE Company, LLC
2111
20
Schlumberger Holdings Limited
2808
17
Prad Research and Development Limited
2692
17
Swellfix UK Limited
55
17
Flowco Production Solutions, LLC
67
16
Baker Hughes Holdings LLC
3001
15
Floway Innovations Inc.
14
14
Aramco Services Company
4023
13
ExxonMobil Upstream Research Company
2395
13
BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC)
215
12
Autres propriétaires 462