Détention brevets de la classe C09K 8/50

Brevets de cette classe: 386

Historique des publications depuis 10 ans

42
44
20
34
14
26
11
14
7
1
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20835
115
Saudi Arabian Oil Company
12947
39
Aramco Services Company
3929
15
Schlumberger Canada Limited
7273
12
Schlumberger Technology B.v.
5161
12
Services Petroliers Schlumberger
5772
12
Schlumberger Holdings Limited
2835
11
Baker Hughes Incorporated
5277
11
Prad Research and Development Limited
2693
10
M-I L.L.C.
813
9
Schlumberger Technology Corporation
10662
8
Baker Hughes Holdings LLC
3005
8
CURTIS, Philip, Anthony
436
7
Limited Liability Company "gr Petroleum"
12
6
Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
823
5
ConocoPhillips Company
1677
5
ENI S.p.A.
1258
5
Championx LLC
494
4
3m Innovative Properties Company
17858
3
Dow Global Technologies LLC
10401
3
Autres propriétaires 86