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
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20403
21
Saudi Arabian Oil Company
12390
13
Statoil Petroleum AS
541
10
Schlumberger Canada Limited
7137
6
Schlumberger Technology B.v.
5058
6
Schlumberger Holdings Limited
2870
6
Prad Research and Development Limited
2696
6
Services Petroliers Schlumberger
5616
6
Swellfix UK Limited
51
5
Schlumberger Technology Corporation
10217
4
Baker Hughes Incorporated
5514
4
Hydra Systems AS
37
4
InflowControl AS
23
4
Aramco Services Company
3735
3
Inflow Control AS
3
3
Limited Liability Company "gr Petroleum"
12
3
Limited Liability Company Oilmind
5
3
Thru Tubing Solutions, Inc.
364
2
Total SA
504
2
Baker Hughes, a GE Company, LLC
2138
2
Autres propriétaires 35