Détention brevets de la classe E21B 43/119

Brevets de cette classe: 886

Historique des publications depuis 10 ans

33
35
39
67
65
74
81
61
76
50
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21006
196
DYNAenergetics Europe GmbH
257
69
Schlumberger Technology Corporation
10994
63
Hunting Titan, Inc.
246
54
Schlumberger Canada Limited
7410
35
Saudi Arabian Oil Company
13569
33
Schlumberger Technology B.v.
5210
27
Services Petroliers Schlumberger
5866
27
Geodynamics, Inc.
195
22
Wells Fargo Bank, National Association
4047
22
ExxonMobil Upstream Research Company
2382
21
Dorf Ketal Chemicals FZE
200
18
G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen
71
17
Schlumberger Holdings Limited
2795
12
Baker Hughes Incorporated
5190
12
Owen Oil Tools LP
86
11
Prad Research and Development Limited
2688
11
XConnect, LLC
54
11
GR Energy Services Management, LP
41
9
Baker Hughes Holdings LLC
3006
9
Autres propriétaires 207