Détention brevets de la classe C09K 8/467

Brevets de cette classe: 1253

Historique des publications depuis 10 ans

87
100
84
70
59
44
51
66
51
7
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21117
377
Saudi Arabian Oil Company
13814
162
Schlumberger Technology Corporation
11238
81
Schlumberger Canada Limited
7485
71
Services Petroliers Schlumberger
5916
59
Schlumberger Technology B.v.
5239
58
Aramco Services Company
4147
44
CURTIS, Philip, Anthony
369
28
Schlumberger Holdings Limited
2757
25
Prad Research and Development Limited
2686
20
TURNER, Craig, Robert
138
20
BASF SE
21135
12
Baker Hughes Holdings LLC
2991
10
Southwest Petroleum University
495
8
Baker Hughes Oilfield Operations, LLC
2402
8
Baker Hughes Incorporated
5140
7
China National Petroleum Corporation
489
7
China Petroleum & Chemical Corporation
1993
7
China University of Petroleum (East China)
399
7
CNPC Engineering Technology R&D Company Limited
103
6
Autres propriétaires 236