Détention brevets de la classe E21B 47/18

Brevets de cette classe: 1164

Historique des publications depuis 10 ans

95
168
132
135
97
71
80
83
61
12
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
294
Schlumberger Technology Corporation
9690
106
Evolution Engineering Inc.
313
96
Baker Hughes Incorporated
5689
39
Baker Hughes, a GE Company, LLC
2171
36
Schlumberger Canada Limited
6913
30
Baker Hughes Oilfield Operations, LLC
1885
28
Saudi Arabian Oil Company
11322
27
Services Petroliers Schlumberger
5426
23
Schlumberger Technology B.v.
4951
19
Unanimous A.I., Inc.
34
16
Halliburton Manufacturing and Services Limited
63
14
Erdos Miller, Inc.
35
14
Scientific Drilling International, Inc.
161
13
Baker Hughes Holdings LLC
3060
12
Weatherford Technology Holdings, LLC
2135
11
ExxonMobil Upstream Research Company
2525
11
Black Diamond Oilfield Rentals LLC
81
10
APS Technology, Inc.
87
9
Bench Tree Group, LLC
63
9
Autres propriétaires 347