Détention brevets de la classe C09K 8/44

Brevets de cette classe: 376

Historique des publications depuis 10 ans

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Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21299
73
Saudi Arabian Oil Company
14390
60
Aramco Services Company
4191
15
Schlumberger Technology Corporation
11961
11
Hilti Aktiengesellschaft
3723
10
China Petroleum & Chemical Corporation
2185
9
Denka Company Limited
2767
8
Kuraray Co., Ltd.
3616
8
Southwest Petroleum University
530
7
Baker Hughes Oilfield Operations, LLC
2555
7
Chevron U.S.A. Inc.
4175
6
Schlumberger Canada Limited
7616
5
Schlumberger Technology B.v.
5289
5
China University of Petroleum (East China)
428
5
Services Petroliers Schlumberger
6024
5
Yangtze University
75
5
Baker Hughes Holdings LLC
3011
5
Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.
62
5
ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company
184
5
ConocoPhillips Company
1717
4
Autres propriétaires 118