Détention brevets de la classe E21B 34/10

Brevets de cette classe: 2440

Historique des publications depuis 10 ans

187
164
189
182
173
152
160
142
117
138
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21078
530
Baker Hughes Oilfield Operations, LLC
2390
153
Schlumberger Technology Corporation
11054
135
Baker Hughes Incorporated
5175
130
Weatherford Technology Holdings, LLC
2033
112
Schlumberger Canada Limited
7432
77
Baker Hughes, a GE Company, LLC
2106
72
Schlumberger Technology B.v.
5223
68
Services Petroliers Schlumberger
5884
68
Saudi Arabian Oil Company
13656
52
Baker Hughes Holdings LLC
3002
29
NCS Multistage Inc.
181
26
Petroleum Technology Company AS
98
22
Tejas Research & Engineering, LLC
26
22
Thru Tubing Solutions, Inc.
381
22
ExxonMobil Upstream Research Company
2379
21
Halliburton Manufacturing and Services Limited
58
21
Weatherford U.K. Limited
70
21
Innovex Downhole Solutions, LLC
146
19
Packers Plus Energy Services Inc.
123
15
Autres propriétaires 825