Détention brevets de la classe E21B 47/18

Brevets de cette classe: 1271

Historique des publications depuis 10 ans

121
121
91
66
75
72
57
42
42
15
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21169
333
Schlumberger Technology Corporation
11471
130
Evolution Engineering Inc.
300
93
Schlumberger Canada Limited
7550
40
Baker Hughes, a GE Company, LLC
2101
36
Services Petroliers Schlumberger
5976
33
Baker Hughes Oilfield Operations, LLC
2436
32
Baker Hughes Incorporated
5045
30
Saudi Arabian Oil Company
13943
30
Schlumberger Technology B.v.
5270
28
Unanimous A.I., Inc.
46
16
Erdos Miller, Inc.
39
16
Halliburton Manufacturing and Services Limited
58
14
Scientific Drilling International, Inc.
171
13
Nabors Drilling Technologies USA, Inc.
571
12
Baker Hughes Holdings LLC
2983
12
Bench Tree Group, LLC
66
11
ExxonMobil Upstream Research Company
2338
11
Weatherford Technology Holdings, LLC
2068
10
Rime Downhole Technologies, LLC
27
10
Autres propriétaires 361