- Sections
- E - Constructions fixes
- E03B - Installations ou procédés pour obtenir, recueillir ou distribuer l'eau
- E03B 3/18 - Filtres de puits
Détention brevets de la classe E03B 3/18
Brevets de cette classe: 55
Historique des publications depuis 10 ans
|
2
|
1
|
4
|
4
|
3
|
2
|
0
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Baker Hughes Incorporated | 5488 |
10 |
| Halliburton Energy Services, Inc. | 20489 |
10 |
| Meurer Research, Inc. | 32 |
6 |
| Schlumberger Technology Corporation | 10317 |
2 |
| Schlumberger Canada Limited | 7170 |
1 |
| Schlumberger Technology B.v. | 5083 |
1 |
| Schlumberger Holdings Limited | 2865 |
1 |
| 3m Innovative Properties Company | 17998 |
1 |
| Hamilton Sundstrand Corporation | 4754 |
1 |
| Chevron U.S.A. Inc. | 3873 |
1 |
| JTEKT Corporation | 2452 |
1 |
| Weatherford Technology Holdings, LLC | 2105 |
1 |
| Aramco Services Company | 3787 |
1 |
| Beijing Hinen-Hitech Petroleum Technology Development Co., Ltd | 1 |
1 |
| C & K Prodiesel Development, LLC | 1 |
1 |
| Composite Technology Development, Inc. | 31 |
1 |
| Framo Engineering AS | 60 |
1 |
| HUSCO Automotive Holdings LLC | 52 |
1 |
| Orbital Systems AB | 83 |
1 |
| Ove ARUP & Partners International Limited | 13 |
1 |
| Autres propriétaires | 11 |