Détention brevets de la classe E21B 43/26

Brevets de cette classe: 7836

Historique des publications depuis 10 ans

630
867
881
725
650
702
784
622
510
156
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
1316
Schlumberger Technology Corporation
9690
407
Saudi Arabian Oil Company
11322
333
Schlumberger Canada Limited
6913
277
Services Petroliers Schlumberger
5426
208
Schlumberger Technology B.v.
4951
185
Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
396
169
Baker Hughes Holdings LLC
3060
164
US Well Services LLC
212
161
BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC)
196
141
Baker Hughes Incorporated
5689
139
Baker Hughes, a GE Company, LLC
2171
90
Schlumberger Holdings Limited
2947
89
Aramco Services Company
3504
89
Cameron International Corporation
1305
89
Chevron U.S.A. Inc.
3774
83
Prad Research and Development Limited
2696
75
ConocoPhillips Company
1657
71
ExxonMobil Upstream Research Company
2525
60
SPM Oil & Gas Inc.
304
60
Autres propriétaires 3630