- Sections
- C - Chimiemétallurgie
- C01B - Éléments non métalliquesleurs composés
- C01B 21/02 - Préparation de l'azote
Détention brevets de la classe C01B 21/02
Brevets de cette classe: 90
Historique des publications depuis 10 ans
|
7
|
6
|
4
|
4
|
9
|
8
|
6
|
5
|
12
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2455 |
5 |
| Saudi Arabian Oil Company | 14349 |
5 |
| Air Products and Chemicals, Inc. | 1470 |
3 |
| Firehawk Aerospace, Inc. | 25 |
3 |
| Wisconsin Alumni Research Foundation | 3902 |
2 |
| Arizona Board of Regents on behalf of Arizona State University | 2975 |
2 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 2314 |
2 |
| Casale SA | 636 |
2 |
| CFD Research Corporation | 58 |
2 |
| Kemira Oyj | 1262 |
2 |
| King Fahd University of Petroleum & Minerals | 195 |
2 |
| North Carolina State University | 1599 |
2 |
| Pioneer Astronautics | 16 |
2 |
| ThyssenKrupp Uhde GmbH | 382 |
2 |
| William Marsh Rice University | 1078 |
2 |
| National Technology & Engineering Solutions of Sandia, LLC | 1956 |
2 |
| EnerCat | 5 |
2 |
| Ekona Power Inc. | 56 |
2 |
| Lynas Rare Earths Limited | 21 |
2 |
| Elemental Recycling, Inc. | 9 |
2 |
| Autres propriétaires | 42 |