- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25J - Liquefaction, solidification, or separation of gases or gaseous mixtures by pressure and cold treatment
- F25J 3/08 - Separating gaseous impurities from gases or gaseous mixtures
Patent holdings for IPC class F25J 3/08
Total number of patents in this class: 312
10-year publication summary
|
37
|
34
|
41
|
24
|
16
|
15
|
25
|
25
|
14
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Air Products and Chemicals, Inc. | 1426 |
31 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3585 |
24 |
| ExxonMobil Upstream Research Company | 2456 |
23 |
| Praxair Technology, Inc. | 1336 |
11 |
| U.S. Bank Trust Co National Association | 76 |
11 |
| L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 304 |
10 |
| IHI Corporation | 3356 |
8 |
| Shell Internationale Research Maatschappij B.V. | 3721 |
5 |
| Linde Aktiengesellschaft | 1551 |
5 |
| Linde GmbH | 1218 |
5 |
| 1304342 Alberta Ltd. | 85 |
4 |
| Butts Properties, Ltd. | 6 |
4 |
| Chiyoda Corporation | 383 |
4 |
| GE Oil & Gas, Inc. | 25 |
4 |
| Lummus Technology Inc. | 314 |
4 |
| Taiyo Nippon Sanso Corporation | 357 |
4 |
| BCCK Holding Company | 23 |
4 |
| Next Carbon Solutions, LLC | 36 |
4 |
| 1304338 Alberta Ltd. | 87 |
3 |
| Chart Energy & Chemicals, Inc. | 53 |
3 |
| Other owners | 141 |