Détention brevets de la classe E21B 23/06

Brevets de cette classe: 1813

Historique des publications depuis 10 ans

121
142
136
139
148
162
122
117
99
49
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21284
412
Baker Hughes Incorporated
4897
105
Schlumberger Technology Corporation
11924
98
Saudi Arabian Oil Company
14349
94
Weatherford Technology Holdings, LLC
2165
79
Baker Hughes Oilfield Operations, LLC
2556
76
Schlumberger Canada Limited
7621
68
Schlumberger Technology B.v.
5299
56
Services Petroliers Schlumberger
6033
56
The Wellboss Company, LLC
120
52
Baker Hughes, a GE Company, LLC
2048
49
Baker Hughes Holdings LLC
3011
38
G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen
82
25
Schlumberger Holdings Limited
2675
16
Hunting Titan, Inc.
231
16
Prad Research and Development Limited
2649
16
Vertice Oil Tools Inc.
96
12
Dbk Industries, LLC
15
12
Aramco Services Company
4192
11
Welltec AS
322
11
Autres propriétaires 511