Détention brevets de la classe E21B 29/00

Brevets de cette classe: 1211

Historique des publications depuis 10 ans

83
130
125
124
117
82
75
89
75
16
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
97
Baker Hughes Incorporated
5689
60
Schlumberger Technology Corporation
9690
59
Baker Hughes Holdings LLC
3060
59
Weatherford Technology Holdings, LLC
2135
50
Ardyne Holdings Limited
86
48
Saudi Arabian Oil Company
11322
38
Baker Hughes Oilfield Operations, LLC
1885
35
Baker Hughes, a GE Company, LLC
2171
34
Schlumberger Canada Limited
6913
33
Wellbore Integrity Solutions LLC
68
31
Schlumberger Technology B.v.
4951
29
Services Petroliers Schlumberger
5426
29
Welltec AS
301
25
Robertson Intellectual Properties, LLC
88
20
ConocoPhillips Company
1657
17
Foro Energy, Inc.
104
17
Abrado, Inc.
35
15
Thru Tubing Solutions, Inc.
361
13
Altus Intervention (technologies) AS
60
11
Autres propriétaires 491