Détention brevets de la classe E21B 29/06

Brevets de cette classe: 450

Historique des publications depuis 10 ans

19
28
21
36
39
35
38
22
23
20
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21284
114
Baker Hughes Oilfield Operations, LLC
2556
47
Weatherford Technology Holdings, LLC
2165
30
Saudi Arabian Oil Company
14349
22
Baker Hughes Holdings LLC
3011
22
Baker Hughes Incorporated
4897
20
Schlumberger Technology Corporation
11924
16
Wellbore Integrity Solutions LLC
108
11
Coiled Tubing Specialties, LLC
33
10
ConocoPhillips Company
1716
8
Schlumberger Canada Limited
7621
7
Abrado, Inc.
26
6
Odfjell Technology Invest Ltd
25
6
Schlumberger Technology B.v.
5299
5
Aarbakke Innovation A.S.
31
5
Aramco Services Company
4192
5
Robertson Intellectual Properties, LLC
94
5
Scientific Drilling International, Inc.
172
5
Services Petroliers Schlumberger
6033
5
Welltec AS
322
5
Autres propriétaires 96