Détention brevets de la classe E21B 33/10

Brevets de cette classe: 427

Historique des publications depuis 10 ans

35
20
25
26
20
18
24
22
16
6
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20911
87
Baker Hughes Incorporated
5274
25
Saudi Arabian Oil Company
13224
25
Schlumberger Technology Corporation
10780
17
Schlumberger Canada Limited
7332
14
Weatherford Technology Holdings, LLC
2023
14
ConocoPhillips Company
1675
12
Schlumberger Technology B.v.
5176
11
Services Petroliers Schlumberger
5803
11
Advanced Upstream Ltd.
40
9
Aramco Services Company
3987
8
Baker Hughes Oilfield Operations, LLC
2302
8
Baker Hughes, a GE Company, LLC
2110
7
Schlumberger Holdings Limited
2817
6
Cameron International Corporation
1335
6
Proppant Express Solutions, LLC
31
6
ExxonMobil Upstream Research Company
2396
5
Kureha Corporation
1024
5
Prad Research and Development Limited
2693
5
DYNAenergetics Europe GmbH
247
4
Autres propriétaires 142