Détention brevets de la classe E21B 43/32

Brevets de cette classe: 146

Historique des publications depuis 10 ans

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7
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Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21153
21
Saudi Arabian Oil Company
13921
13
Statoil Petroleum AS
492
9
Schlumberger Canada Limited
7550
6
Schlumberger Technology B.v.
5263
6
Schlumberger Holdings Limited
2751
6
Prad Research and Development Limited
2681
6
Services Petroliers Schlumberger
5966
6
Swellfix UK Limited
58
5
Baker Hughes Incorporated
5082
4
Hydra Systems AS
36
4
InflowControl AS
24
4
Schlumberger Technology Corporation
11404
3
Aramco Services Company
4164
3
Inflow Control AS
3
3
Thru Tubing Solutions, Inc.
390
2
Baker Hughes, a GE Company, LLC
2103
2
CURTIS, Philip, Anthony
359
2
Sergeev, Vitalii Vyacheslavovich
7
2
Vyacheslavovich Sergeev, Vitalii
2
2
Autres propriétaires 37