Détention brevets de la classe E21B 44/08

Brevets de cette classe: 36

Historique des publications depuis 10 ans

2
4
8
2
2
6
3
1
1
3
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Schlumberger Technology Corporation
11940
5
Helmerich & Payne Technologies, LLC
123
4
ConocoPhillips Company
1714
3
Halliburton Energy Services, Inc.
21292
2
Landmark Graphics Corporation
1492
2
Mhwirth AS
132
2
Nabors Drilling Technologies USA, Inc.
577
2
Saudi Arabian Oil Company
14369
2
National Technology & Engineering Solutions of Sandia, LLC
1953
2
Baker Hughes Incorporated
4883
1
Massachusetts Institute of Technology
10305
1
Aramco Services Company
4190
1
Bauer Maschinen GmbH
246
1
Intellicess Inc.
10
1
Sandvik Mining and Construction Oy
892
1
Xact Downhole Telemetry Inc.
11
1
Baker Hughes, a GE Company, LLC
2022
1
Exebenus AS
22
1
A&O Technologies LLC
6
1
Epiroc Rock Drills Aktiebolag
676
1
Autres propriétaires 1