Détention brevets de la classe E21B 23/06

Brevets de cette classe: 1602

Historique des publications depuis 10 ans

142
148
121
142
136
138
147
161
108
33
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20165
350
Baker Hughes Incorporated
5689
116
Saudi Arabian Oil Company
11322
82
Schlumberger Technology Corporation
9690
77
Weatherford Technology Holdings, LLC
2135
76
Schlumberger Canada Limited
6913
57
Baker Hughes Oilfield Operations, LLC
1885
54
Schlumberger Technology B.v.
4951
49
Services Petroliers Schlumberger
5426
49
Baker Hughes, a GE Company, LLC
2171
49
The Wellboss Company, LLC
96
43
Baker Hughes Holdings LLC
3060
40
Schlumberger Holdings Limited
2947
17
G & H Diversified Manufacturing, LP, Edward Cannoy Kash, U.S. Citizen; Merry Janan Kash, U.S. Citizen
61
17
Hunting Titan, Inc.
240
16
Prad Research and Development Limited
2696
16
Welltec Oilfield Solutions AG
140
16
Aramco Services Company
3504
11
Welltec AS
301
11
Exacta-Frac Energy Services, Inc.
56
11
Autres propriétaires 445