Détention brevets de la classe E21B 34/10

Brevets de cette classe: 2504

Historique des publications depuis 10 ans

184
206
201
190
166
191
175
149
173
65
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21292
571
Baker Hughes Oilfield Operations, LLC
2555
159
Schlumberger Technology Corporation
11940
139
Baker Hughes Incorporated
4883
120
Weatherford Technology Holdings, LLC
2166
120
Schlumberger Canada Limited
7610
79
Baker Hughes, a GE Company, LLC
2022
72
Schlumberger Technology B.v.
5287
69
Services Petroliers Schlumberger
6022
69
Saudi Arabian Oil Company
14369
53
Baker Hughes Holdings LLC
3010
29
NCS Multistage Inc.
170
27
Tejas Research & Engineering, LLC
28
23
Thru Tubing Solutions, Inc.
407
23
Petroleum Technology Company AS
95
22
ExxonMobil Upstream Research Company
2285
21
Halliburton Manufacturing and Services Limited
58
21
Weatherford U.K. Limited
70
21
Innovex Downhole Solutions, LLC
143
19
Packers Plus Energy Services Inc.
118
15
Autres propriétaires 832