Détention brevets de la classe G09B 23/40

Brevets de cette classe: 84

Historique des publications depuis 10 ans

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1
4
9
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3
1
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Propriétaires principaux

Proprétaire
Total
Cette classe
Schlumberger Technology Corporation
12005
8
Saudi Arabian Oil Company
14416
8
Shandong University
1168
7
Schlumberger Canada Limited
7622
5
Zhejiang University
3494
5
Services Petroliers Schlumberger
6032
3
Ceraphi Energy Limited
6
3
Schlumberger Technology B.v.
5294
2
Aramco Services Company
4191
2
Geoquest Systems B.V.
891
2
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences
250
2
Shandong University of Science and Technology
547
2
National Disaster Management Research Institute
22
2
Idea Vault Holdings Inc
58
2
Chevron U.S.A. Inc.
4186
1
Beijing Normal University
109
1
China Petroleum & Chemical Corporation
2190
1
China University of Petroleum (Beijing)
307
1
Chongqing University
312
1
Institute of Geology and Geophysics, Chinese Academy of Sciences
362
1
Autres propriétaires 25