Détention brevets de la classe E21B 27/02

Brevets de cette classe: 175

Historique des publications depuis 10 ans

12
12
6
14
10
25
15
10
2
4
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20949
21
Saudi Arabian Oil Company
13295
20
Resman AS
75
15
Aramco Services Company
4002
7
Bisn Tec Ltd
79
7
Schlumberger Technology Corporation
10820
5
Metrol Technology Limited
85
5
Thru Tubing Solutions, Inc.
379
5
Equinor Energy AS
498
5
Schlumberger Canada Limited
7350
4
Schlumberger Technology B.v.
5181
4
Schlumberger Holdings Limited
2813
4
Shell Internationale Research Maatschappij B.V.
3546
4
ExxonMobil Upstream Research Company
2395
4
Prad Research and Development Limited
2692
4
Qinterra Technologies AS
38
4
Services Petroliers Schlumberger
5817
4
Welltec AS
298
4
Altus Intervention (technologies) AS
66
4
ENI S.p.A.
1273
3
Autres propriétaires 42