Détention brevets de la classe E21B 27/00

Brevets de cette classe: 322

Historique des publications depuis 10 ans

35
30
25
36
23
18
31
32
8
4
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
44
Saudi Arabian Oil Company
11322
27
Altus Intervention (technologies) AS
60
15
Baker Hughes Holdings LLC
3060
15
Schlumberger Technology Corporation
9690
13
Baker Hughes Incorporated
5689
13
Aramco Services Company
3504
12
Typhon Technology Solutions (U.S.), LLC
78
11
Forum US, Inc.
315
7
Bauer Maschinen GmbH
210
6
Altus Intervention AS
21
5
Weatherford Technology Holdings, LLC
2135
4
Interwell Technology AS
32
4
Katch Kan Holdings Ltd.
52
4
Qinterra Technologies AS
38
4
Wellbore Energy Solutions, LLC
7
4
Welltec AS
301
4
Baker Hughes, a GE Company, LLC
2171
4
Master Sinkers (Pty) Ltd
7
4
Schlumberger Oilfield UK Limited
57
4
Autres propriétaires 118