Détention brevets de la classe E21B 47/18

Brevets de cette classe: 1260

Historique des publications depuis 10 ans

121
121
91
66
75
72
57
42
42
6
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21117
332
Schlumberger Technology Corporation
11238
126
Evolution Engineering Inc.
300
93
Schlumberger Canada Limited
7485
36
Baker Hughes, a GE Company, LLC
2101
36
Baker Hughes Incorporated
5140
35
Baker Hughes Oilfield Operations, LLC
2402
32
Saudi Arabian Oil Company
13814
30
Services Petroliers Schlumberger
5916
30
Schlumberger Technology B.v.
5239
25
Unanimous A.I., Inc.
46
16
Erdos Miller, Inc.
38
16
Halliburton Manufacturing and Services Limited
58
14
Scientific Drilling International, Inc.
169
13
Nabors Drilling Technologies USA, Inc.
565
12
Baker Hughes Holdings LLC
2991
12
Bench Tree Group, LLC
65
11
ExxonMobil Upstream Research Company
2364
11
Weatherford Technology Holdings, LLC
2033
10
Rime Downhole Technologies, LLC
27
10
Autres propriétaires 360