Détention brevets de la classe E21B 37/00

Brevets de cette classe: 1086

Historique des publications depuis 10 ans

115
101
90
82
93
75
54
47
61
22
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21296
144
Saudi Arabian Oil Company
14329
110
Schlumberger Technology Corporation
11893
51
Baker Hughes Incorporated
4903
37
Hydra Systems AS
48
28
Baker Hughes Holdings LLC
3015
28
Schlumberger Canada Limited
7627
23
Services Petroliers Schlumberger
6038
23
Baker Hughes Oilfield Operations, LLC
2551
22
Baker Hughes, a GE Company, LLC
2049
22
Schlumberger Technology B.v.
5302
21
Aramco Services Company
4192
18
ConocoPhillips Company
1716
18
Weatherford Technology Holdings, LLC
2161
17
Odfjell Well Services Norway AS
19
15
Petroleo Brasileiro S.A. - Petrobras
973
15
M-I L.L.C.
737
14
Welltec AS
321
12
Altus Intervention (technologies) AS
53
12
Schlumberger Holdings Limited
2683
11
Autres propriétaires 445