Détention brevets de la classe E21B 47/013

Brevets de cette classe: 150

Historique des publications depuis 10 ans

7
0
0
1
8
15
26
25
16
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
20438
25
Schlumberger Technology Corporation
10263
16
Baker Hughes Incorporated
5504
16
Saudi Arabian Oil Company
12446
14
Baker Hughes Oilfield Operations, LLC
2128
9
Schlumberger Canada Limited
7154
8
Schlumberger Technology B.v.
5075
6
Services Petroliers Schlumberger
5633
6
Element Six Limited
120
3
Merlin Technology, Inc.
164
3
Element Six (UK) Limited
203
3
Aramco Services Company
3750
2
Institute of Geology and Geophysics, Chinese Academy of Sciences
308
2
King Abdullah University of Science and Technology
1744
2
Nabors Drilling Technologies USA, Inc.
547
2
National Oilwell Varco, L.P.
1627
2
Petromac IP Limited
37
2
Sandvik Mining and Construction Oy
787
2
Sanvean Technologies LLC
38
2
Erdos Miller, Inc.
36
2
Autres propriétaires 23