- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- 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: 328
10-year publication summary
|
34
|
41
|
24
|
16
|
16
|
26
|
27
|
16
|
12
|
17
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4132 |
32 |
| Air Products and Chemicals, Inc. | 1470 |
26 |
| ExxonMobil Upstream Research Company | 2288 |
23 |
| Praxair Technology, Inc. | 1214 |
11 |
| U.S. Bank Trust Co National Association | 75 |
11 |
| IHI Corporation | 3539 |
8 |
| Shell Internationale Research Maatschappij B.V. | 3387 |
5 |
| Chiyoda Corporation | 431 |
5 |
| Linde GmbH | 1375 |
5 |
| Honeywell LNG LLC | 100 |
5 |
| 1304342 Alberta Ltd. | 89 |
4 |
| Air Water Inc. | 168 |
4 |
| Butts Properties, Ltd. | 5 |
4 |
| ConocoPhillips Company | 1716 |
4 |
| GE Oil & Gas, Inc. | 22 |
4 |
| Lummus Technology Inc. | 284 |
4 |
| BCCK Holding Company | 23 |
4 |
| Next Carbon Solutions, LLC | 39 |
4 |
| 1304338 Alberta Ltd. | 90 |
3 |
| Chart Energy & Chemicals, Inc. | 79 |
3 |
| Other owners | 159 |