Détention brevets de la classe E21B 47/16

Brevets de cette classe: 528

Historique des publications depuis 10 ans

34
48
48
25
28
21
19
12
22
2
2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Propriétaires principaux

Proprétaire
Total
Cette classe
Halliburton Energy Services, Inc.
21217
112
ExxonMobil Upstream Research Company
2335
40
Schlumberger Technology Corporation
11485
35
Baker Hughes Oilfield Operations, LLC
2441
27
Schlumberger Canada Limited
7558
19
Services Petroliers Schlumberger
5977
18
Baker Hughes Incorporated
5041
17
Schlumberger Technology B.v.
5267
16
Saudi Arabian Oil Company
13953
14
Prad Research and Development Limited
2679
13
Schlumberger Holdings Limited
2735
12
Helmerich & Payne Technologies, LLC
110
11
Baker Hughes Oilfield Operations LLC
18
10
Weatherford Technology Holdings, LLC
2068
8
Cold Bore Technology Inc.
34
8
Baker Hughes, a GE Company, LLC
2094
8
Acoustic Data Limited
15
8
National Oilwell Varco, L.P.
1690
6
Raptor Data Limited
20
6
EOG Resources, Inc.
87
5
Autres propriétaires 135