Détention brevets de la classe C09K 8/467

Brevets de cette classe: 1292

Historique des publications depuis 10 ans

96
110
94
77
60
47
56
74
54
54
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21296
381
Saudi Arabian Oil Company
14329
176
Schlumberger Technology Corporation
11893
88
Schlumberger Canada Limited
7627
73
Services Petroliers Schlumberger
6038
60
Schlumberger Technology B.v.
5302
59
Aramco Services Company
4192
44
Schlumberger Holdings Limited
2683
23
Prad Research and Development Limited
2652
20
CURTIS, Philip, Anthony
327
20
TURNER, Craig, Robert
137
20
Baker Hughes Oilfield Operations, LLC
2551
12
BASF SE
21320
11
Baker Hughes Holdings LLC
3015
10
China National Petroleum Corporation
642
9
China Petroleum & Chemical Corporation
2169
8
Southwest Petroleum University
528
8
Baker Hughes Incorporated
4903
7
China University of Petroleum (East China)
423
7
CNPC Engineering Technology R&D Company Limited
127
7
Autres propriétaires 249