- 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: 310
10-year publication summary
47
|
37
|
34
|
41
|
24
|
16
|
15
|
24
|
24
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Air Products and Chemicals, Inc. | 1448 |
31 |
ExxonMobil Upstream Research Company | 2525 |
23 |
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
23 |
Praxair Technology, Inc. | 1367 |
12 |
U.S. Bank Trust Co National Association | 78 |
11 |
L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 296 |
10 |
IHI Corporation | 3268 |
8 |
Shell Internationale Research Maatschappij B.V. | 3792 |
5 |
Linde Aktiengesellschaft | 1600 |
5 |
1304342 Alberta Ltd. | 85 |
4 |
Butts Properties, Ltd. | 6 |
4 |
Chiyoda Corporation | 363 |
4 |
GE Oil & Gas, Inc. | 25 |
4 |
Lummus Technology Inc. | 322 |
4 |
BCCK Holding Company | 21 |
4 |
1304338 Alberta Ltd. | 87 |
3 |
Chart Energy & Chemicals, Inc. | 43 |
3 |
Quantum Design International, Inc. | 28 |
3 |
Saudi Arabian Oil Company | 11322 |
3 |
Taiyo Nippon Sanso Corporation | 356 |
3 |
Other owners | 143 |