Détention brevets de la classe E21B 27/04

Brevets de cette classe: 53

Historique des publications depuis 10 ans

4
10
4
5
10
1
3
1
2
0
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Propriétaires principaux

Proprétaire
Total
Cette classe
Altus Intervention (technologies) AS
65
11
Qinterra Technologies AS
38
7
Baker Hughes Holdings LLC
3006
5
Halliburton Energy Services, Inc.
20769
4
Schlumberger Technology Corporation
10641
2
Sandvik Mining and Construction Oy
817
2
Thru Tubing Solutions, Inc.
375
2
Swarfix AS
3
2
Schlumberger Canada Limited
7244
1
Schlumberger Technology B.v.
5154
1
Archer Oil Tools AS
16
1
Bauer Maschinen GmbH
218
1
BlueStone Royalty, LLC
1
1
Innova Drilling and Intervention Limited
1
1
KLX Energy Services LLC
71
1
Saudi Arabian Oil Company
12891
1
Services Petroliers Schlumberger
5763
1
Baker Hughes Oilfield Operations, LLC
2273
1
Norse Oiltools AS
4
1
Oldenamp B.V.
3
1
Autres propriétaires 6