- 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: 1541
10-year publication summary
|
78
|
139
|
160
|
125
|
95
|
106
|
123
|
107
|
115
|
59
|
| 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 | 3990 |
181 |
| Shell Internationale Research Maatschappij B.V. | 3546 |
110 |
| ExxonMobil Upstream Research Company | 2395 |
65 |
| ConocoPhillips Company | 1677 |
51 |
| Hercules Project Company LLC | 71 |
50 |
| Linde Aktiengesellschaft | 1498 |
48 |
| Shell Oil Company | 2138 |
40 |
| Praxair Technology, Inc. | 1285 |
39 |
| Nuovo Pignone Tecnologie S.r.l. | 991 |
36 |
| Shell USA, Inc. | 1228 |
29 |
| Hanwha Ocean Co., Ltd. | 126 |
25 |
| Chart Energy & Chemicals, Inc. | 59 |
24 |
| Linde GmbH | 1256 |
24 |
| Engie | 184 |
23 |
| ExxonMobil Technology and Engineering Company | 1097 |
21 |
| Saudi Arabian Oil Company | 13295 |
20 |
| U.S. Bank Trust Company, National Association, AS The Notes Collateral Agent | 70 |
20 |
| Air Products and Chemicals, Inc. | 1443 |
18 |
| Technip France | 705 |
18 |
| Cryostar SAS | 120 |
15 |
| Other owners | 684 |