Détention brevets de la classe E21B 37/00

Brevets de cette classe: 1096

Historique des publications depuis 10 ans

85
103
89
76
73
86
69
51
44
48
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21002
142
Saudi Arabian Oil Company
13472
105
Schlumberger Technology Corporation
10949
46
Baker Hughes Incorporated
5236
40
ConocoPhillips Company
1682
28
Baker Hughes Holdings LLC
3012
28
Schlumberger Canada Limited
7396
24
Services Petroliers Schlumberger
5850
24
Schlumberger Technology B.v.
5201
23
Baker Hughes Oilfield Operations, LLC
2353
22
Baker Hughes, a GE Company, LLC
2109
22
Aramco Services Company
4047
18
Hydra Systems AS
37
16
M-I L.L.C.
808
15
Odfjell Well Services Norway AS
19
15
Altus Intervention (technologies) AS
68
15
Weatherford Technology Holdings, LLC
2036
14
Petroleo Brasileiro S.A. - Petrobras
870
14
Schlumberger Holdings Limited
2799
13
Prad Research and Development Limited
2690
11
Autres propriétaires 461