Détention brevets de la classe E21B 47/24

Brevets de cette classe: 67

Historique des publications depuis 10 ans

3
0
2
3
7
4
6
12
4
2
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Evolution Engineering Inc.
300
12
Halliburton Energy Services, Inc.
21015
6
Sanvean Technologies LLC
38
5
Schlumberger Technology Corporation
11013
4
Bench Tree Group, LLC
63
4
China Petroleum & Chemical Corporation
1941
4
Rime Downhole Technologies, LLC
27
3
Baker Hughes Oilfield Operations, LLC
2378
3
Vertex Downhole Technologies Inc.
4
3
Gtherm Energy, Inc.
14
2
Extensive Energy Technologies Partnership
15
2
Schlumberger Canada Limited
7416
1
China University of Geosciences, Beijing
74
1
China University of Petroleum (East China)
387
1
Colorado School of Mines
188
1
Drilformance Technologies, LLC
15
1
ENI S.p.A.
1278
1
Institute of Geology and Geophysics, Chinese Academy of Sciences
335
1
Japan Agency for Marine-Earth Science and Technology
175
1
National Oilwell Varco, L.P.
1694
1
Autres propriétaires 10