Détention brevets de la classe E21B 47/18

Brevets de cette classe: 1301

Historique des publications depuis 10 ans

132
135
98
71
82
87
72
44
48
48
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21292
332
Schlumberger Technology Corporation
11940
141
Evolution Engineering Inc.
302
93
Schlumberger Canada Limited
7610
45
Baker Hughes Oilfield Operations, LLC
2555
37
Services Petroliers Schlumberger
6022
36
Baker Hughes, a GE Company, LLC
2022
36
Schlumberger Technology B.v.
5287
31
Saudi Arabian Oil Company
14369
30
Baker Hughes Incorporated
4883
26
Unanimous A.I., Inc.
54
16
Erdos Miller, Inc.
39
16
Halliburton Manufacturing and Services Limited
58
14
Scientific Drilling International, Inc.
173
13
Nabors Drilling Technologies USA, Inc.
577
12
Baker Hughes Holdings LLC
3010
12
Bench Tree Group, LLC
67
11
ExxonMobil Upstream Research Company
2285
11
Weatherford Technology Holdings, LLC
2166
10
Rime Downhole Technologies, LLC
29
10
Autres propriétaires 369