Détention brevets de la classe E21B 43/32

Brevets de cette classe: 143

Historique des publications depuis 10 ans

4
10
14
10
12
4
7
0
2
2
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21296
21
Saudi Arabian Oil Company
14398
14
Statoil Petroleum AS
468
9
Schlumberger Canada Limited
7621
6
Schlumberger Technology B.v.
5292
6
Schlumberger Holdings Limited
2659
6
Prad Research and Development Limited
2641
6
Services Petroliers Schlumberger
6029
6
Swellfix UK Limited
62
5
Baker Hughes Incorporated
4865
4
Hydra Systems AS
48
4
InflowControl AS
25
4
Schlumberger Technology Corporation
11981
3
Aramco Services Company
4190
3
Inflow Control AS
3
3
Thru Tubing Solutions, Inc.
407
2
Baker Hughes, a GE Company, LLC
2019
2
Sergeev, Vitalii Vyacheslavovich
7
2
Vyacheslavovich Sergeev, Vitalii
2
2
General Electric Company
14010
1
Autres propriétaires 34