Détention brevets de la classe E21B 34/10

Brevets de cette classe: 2196

Historique des publications depuis 10 ans

172
211
184
206
201
190
166
189
150
39
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
413
Baker Hughes Incorporated
5689
137
Schlumberger Technology Corporation
9690
121
Baker Hughes Oilfield Operations, LLC
1885
115
Weatherford Technology Holdings, LLC
2135
113
Baker Hughes, a GE Company, LLC
2171
74
Schlumberger Canada Limited
6913
60
Schlumberger Technology B.v.
4951
56
Services Petroliers Schlumberger
5426
56
Saudi Arabian Oil Company
11322
44
Baker Hughes Holdings LLC
3060
30
ExxonMobil Upstream Research Company
2525
22
NCS Multistage Inc.
172
22
Petroleum Technology Company AS
98
22
Tejas Research & Engineering, LLC
26
22
Halliburton Manufacturing and Services Limited
63
21
Innovex Downhole Solutions, Inc.
182
21
Thru Tubing Solutions, Inc.
361
20
Weatherford U.K. Limited
73
20
Welltec Oilfield Solutions AG
140
20
Autres propriétaires 787