Détention brevets de la classe E21B 43/32

Brevets de cette classe: 148

Historique des publications depuis 10 ans

6
4
10
14
9
12
4
7
0
2
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20788
21
Saudi Arabian Oil Company
12911
13
Statoil Petroleum AS
518
10
Schlumberger Canada Limited
7266
6
Schlumberger Technology B.v.
5160
6
Schlumberger Holdings Limited
2839
6
Prad Research and Development Limited
2693
6
Services Petroliers Schlumberger
5771
6
Swellfix UK Limited
53
5
Schlumberger Technology Corporation
10652
4
Baker Hughes Incorporated
5279
4
Hydra Systems AS
37
4
InflowControl AS
24
4
Aramco Services Company
3927
3
Inflow Control AS
3
3
Limited Liability Company "gr Petroleum"
12
3
Limited Liability Company Oilmind
5
3
Thru Tubing Solutions, Inc.
376
2
Total SA
495
2
Baker Hughes, a GE Company, LLC
2114
2
Autres propriétaires 35