Détention brevets de la classe E21B 33/1295

Brevets de cette classe: 137

Historique des publications depuis 10 ans

12
6
12
15
8
11
9
18
7
2
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
29
Baker Hughes Incorporated
5689
10
Schlumberger Technology Corporation
9690
8
Weatherford Technology Holdings, LLC
2135
6
Saudi Arabian Oil Company
11322
6
Baker Hughes, a GE Company, LLC
2171
5
Baker Hughes Holdings LLC
3060
5
Schlumberger Canada Limited
6913
4
Baker Hughes Oilfield Operations, LLC
1885
4
Schlumberger Technology B.v.
4951
3
Services Petroliers Schlumberger
5426
3
Alaskan Energy Resources, Inc.
8
2
Aramco Services Company
3504
2
China National Petroleum Corporation
245
2
Comitt Well Solutions US Holding Inc.
11
2
ExxonMobil Upstream Research Company
2525
2
Interwell Norway AS
48
2
Kobold Services Inc.
5
2
Well Technology AS
11
2
Exacta-Frac Energy Services, Inc.
56
2
Autres propriétaires 36