- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F25J - Liquefaction, solidification, or separation of gases or gaseous mixtures by pressure and cold treatment
- F25J 1/02 - Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen
Patent holdings for IPC class F25J 1/02
Total number of patents in this class: 1515
10-year publication summary
|
88
|
172
|
189
|
146
|
109
|
120
|
135
|
120
|
120
|
28
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
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 | 3863 |
170 |
| Shell Internationale Research Maatschappij B.V. | 3497 |
101 |
| ExxonMobil Upstream Research Company | 2415 |
65 |
| ConocoPhillips Company | 1668 |
52 |
| Linde Aktiengesellschaft | 1534 |
51 |
| Hercules Project Company LLC | 73 |
49 |
| Shell Oil Company | 2145 |
40 |
| Praxair Technology, Inc. | 1316 |
39 |
| Nuovo Pignone Tecnologie S.r.l. | 907 |
37 |
| Shell USA, Inc. | 1163 |
29 |
| Linde GmbH | 1242 |
23 |
| Hanwha Ocean Co., Ltd. | 109 |
23 |
| Chart Energy & Chemicals, Inc. | 58 |
22 |
| Engie | 183 |
22 |
| Air Products and Chemicals, Inc. | 1386 |
21 |
| U.S. Bank Trust Company, National Association, AS The Notes Collateral Agent | 70 |
20 |
| Saudi Arabian Oil Company | 12609 |
19 |
| Technip France | 709 |
19 |
| ExxonMobil Technology and Engineering Company | 990 |
19 |
| Cryostar SAS | 115 |
15 |
| Other owners | 679 |