Détention brevets de la classe C09K 8/575

Brevets de cette classe: 333

Historique des publications depuis 10 ans

45
45
33
25
12
8
9
5
14
11
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21299
97
Saudi Arabian Oil Company
14390
35
Schlumberger Technology Corporation
11961
14
Baker Hughes Holdings LLC
3011
11
Baker Hughes, a GE Company, LLC
2022
8
Schlumberger Canada Limited
7616
7
Schlumberger Technology B.v.
5289
7
Aramco Services Company
4191
7
M-I L.L.C.
721
7
Services Petroliers Schlumberger
6024
7
Schlumberger Holdings Limited
2660
6
Prad Research and Development Limited
2642
6
Rhodia Operations
1484
5
Trican Well Service Ltd.
72
5
ENERGY SOLUTIONS (US) LLC, a Delaware limited liability company
184
5
EPG (engineered Nanoproducts Germany) AG
38
4
Poweltec
15
4
Aramco Americas Company
91
4
Schlumberger Norge AS
72
3
Canadian Energy Services LP
73
3
Autres propriétaires 88