Détention brevets de la classe E21B 33/126

Brevets de cette classe: 215

Historique des publications depuis 10 ans

22
15
10
13
11
17
19
14
9
1
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20403
37
Schlumberger Technology Corporation
10217
14
Rubberatkins Limited
32
13
Weatherford Technology Holdings, LLC
2107
9
Baker Hughes Oilfield Operations, LLC
2105
9
Baker Hughes Holdings LLC
3013
7
Schlumberger Canada Limited
7137
6
Baker Hughes Incorporated
5514
6
Saudi Arabian Oil Company
12390
6
Schlumberger Technology B.v.
5058
5
Services Petroliers Schlumberger
5616
5
Isolation Equipment Services Inc.
22
3
Oil States Energy Services, L.L.C.
75
3
Pilot Drilling Control Limited
11
3
Saltel Industries
64
3
Weatherford U.K. Limited
73
3
Welltec AS
297
3
ExxonMobil Upstream Research Company
2456
2
HydraWell Inc.
6
2
Packers Plus Energy Services Inc.
123
2
Autres propriétaires 74