Détention brevets de la classe E21B 34/10

Brevets de cette classe: 2422

Historique des publications depuis 10 ans

187
164
189
182
173
152
160
142
117
121
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21020
521
Baker Hughes Oilfield Operations, LLC
2360
152
Schlumberger Technology Corporation
10957
134
Baker Hughes Incorporated
5233
131
Weatherford Technology Holdings, LLC
2036
112
Schlumberger Canada Limited
7403
76
Baker Hughes, a GE Company, LLC
2108
72
Schlumberger Technology B.v.
5203
67
Services Petroliers Schlumberger
5852
67
Saudi Arabian Oil Company
13512
50
Baker Hughes Holdings LLC
3010
29
NCS Multistage Inc.
178
25
Petroleum Technology Company AS
98
22
Tejas Research & Engineering, LLC
26
22
Thru Tubing Solutions, Inc.
381
22
ExxonMobil Upstream Research Company
2386
21
Halliburton Manufacturing and Services Limited
58
21
Weatherford U.K. Limited
71
21
Innovex Downhole Solutions, LLC
147
19
Packers Plus Energy Services Inc.
122
15
Autres propriétaires 823