Détention brevets de la classe E21B 33/1295

Brevets de cette classe: 142

Historique des publications depuis 10 ans

6
12
15
8
11
9
18
7
7
1
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20403
30
Schlumberger Technology Corporation
10217
9
Baker Hughes Incorporated
5514
9
Saudi Arabian Oil Company
12390
6
Weatherford Technology Holdings, LLC
2107
5
Baker Hughes Oilfield Operations, LLC
2105
5
Baker Hughes, a GE Company, LLC
2138
5
Baker Hughes Holdings LLC
3013
5
Schlumberger Canada Limited
7137
4
China National Petroleum Corporation
325
4
Schlumberger Technology B.v.
5058
3
Services Petroliers Schlumberger
5616
3
Alaskan Energy Resources, Inc.
9
2
Aramco Services Company
3735
2
CNPC USA Corp.
134
2
Comitt Well Solutions US Holding Inc.
11
2
ExxonMobil Upstream Research Company
2456
2
Interwell Norway AS
58
2
Kobold Services Inc.
5
2
Well Technology AS
9
2
Autres propriétaires 38