Détention brevets de la classe E21B 34/12

Brevets de cette classe: 476

Historique des publications depuis 10 ans

75
80
31
39
39
30
23
18
13
7
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
95
Baker Hughes Incorporated
5689
46
Weatherford Technology Holdings, LLC
2135
27
Schlumberger Technology Corporation
9690
16
Baker Hughes Holdings LLC
3060
12
Baker Hughes, a GE Company, LLC
2171
11
Baker Hughes Oilfield Operations, LLC
1885
10
NCS Multistage Inc.
172
9
Packers Plus Energy Services Inc.
120
9
Saudi Arabian Oil Company
11322
9
Thru Tubing Solutions, Inc.
361
9
Schlumberger Canada Limited
6913
8
Schlumberger Technology B.v.
4951
8
Services Petroliers Schlumberger
5426
8
Schlumberger Holdings Limited
2947
6
ExxonMobil Upstream Research Company
2525
6
Prad Research and Development Limited
2696
6
Tejas Research & Engineering, LLC
26
6
Geodynamics, Inc.
203
5
Rotojar Innovations Limited
29
5
Autres propriétaires 165