Détention brevets de la classe E21B 34/08

Brevets de cette classe: 1293

Historique des publications depuis 10 ans

90
79
76
81
91
109
121
146
90
24
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
321
Schlumberger Technology Corporation
9690
58
Baker Hughes Incorporated
5689
55
Saudi Arabian Oil Company
11322
52
Baker Hughes Oilfield Operations, LLC
1885
51
Weatherford Technology Holdings, LLC
2135
44
Schlumberger Canada Limited
6913
39
Schlumberger Technology B.v.
4951
34
Services Petroliers Schlumberger
5426
33
Statoil Petroleum AS
555
23
Baker Hughes, a GE Company, LLC
2171
20
Schlumberger Holdings Limited
2947
17
Prad Research and Development Limited
2696
17
Swellfix UK Limited
51
15
Baker Hughes Holdings LLC
3060
15
Flowco Production Solutions, LLC
69
14
ExxonMobil Upstream Research Company
2525
13
Aramco Services Company
3504
11
Petroleum Technology Company AS
98
11
Floway Innovations Inc.
11
11
Autres propriétaires 439