Détention brevets de la classe C09K 8/467

Brevets de cette classe: 1268

Historique des publications depuis 10 ans

96
110
94
77
60
47
55
74
53
26
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21257
380
Saudi Arabian Oil Company
13956
164
Schlumberger Technology Corporation
11584
83
Schlumberger Canada Limited
7588
73
Services Petroliers Schlumberger
5996
60
Schlumberger Technology B.v.
5282
59
Aramco Services Company
4162
43
Schlumberger Holdings Limited
2724
25
CURTIS, Philip, Anthony
348
23
Prad Research and Development Limited
2678
20
TURNER, Craig, Robert
138
20
BASF SE
21165
11
Baker Hughes Oilfield Operations, LLC
2480
10
Baker Hughes Holdings LLC
2986
10
China National Petroleum Corporation
580
9
China Petroleum & Chemical Corporation
2095
8
Southwest Petroleum University
515
8
Baker Hughes Incorporated
5018
7
China University of Petroleum (East China)
404
7
CNPC Engineering Technology R&D Company Limited
120
7
Autres propriétaires 241