Détention brevets de la classe E21B 33/10

Brevets de cette classe: 422

Historique des publications depuis 10 ans

35
20
25
26
20
18
24
22
16
9
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21021
86
Saudi Arabian Oil Company
13622
25
Baker Hughes Incorporated
5179
23
Schlumberger Technology Corporation
11023
17
Schlumberger Canada Limited
7418
14
Weatherford Technology Holdings, LLC
2034
14
Schlumberger Technology B.v.
5217
11
ConocoPhillips Company
1682
11
Services Petroliers Schlumberger
5874
11
Advanced Upstream Ltd.
37
9
Aramco Services Company
4090
8
Baker Hughes Oilfield Operations, LLC
2380
8
Baker Hughes, a GE Company, LLC
2107
7
Schlumberger Holdings Limited
2791
6
Cameron International Corporation
1351
6
Proppant Express Solutions, LLC
33
6
ExxonMobil Upstream Research Company
2380
5
Kureha Corporation
1039
5
Prad Research and Development Limited
2687
5
DYNAenergetics Europe GmbH
257
4
Autres propriétaires 141