Détention brevets de la classe C09K 8/44

Brevets de cette classe: 358

Historique des publications depuis 10 ans

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Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21257
72
Saudi Arabian Oil Company
13956
54
Aramco Services Company
4162
15
Schlumberger Technology Corporation
11584
10
Hilti Aktiengesellschaft
3625
10
China Petroleum & Chemical Corporation
2095
9
Denka Company Limited
2710
9
Kuraray Co., Ltd.
3581
8
Southwest Petroleum University
515
7
Chevron U.S.A. Inc.
4117
6
Schlumberger Canada Limited
7588
5
Schlumberger Technology B.v.
5282
5
China University of Petroleum (East China)
404
5
Services Petroliers Schlumberger
5996
5
Yangtze University
73
5
Baker Hughes Oilfield Operations, LLC
2480
5
Baker Hughes Holdings LLC
2986
5
Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.
53
5
ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company
186
5
ConocoPhillips Company
1697
4
Autres propriétaires 109