- 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: 1534
10-year publication summary
|
88
|
172
|
189
|
146
|
109
|
120
|
137
|
120
|
120
|
49
|
| 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 | 3974 |
178 |
| Shell Internationale Research Maatschappij B.V. | 3551 |
110 |
| ExxonMobil Upstream Research Company | 2405 |
65 |
| ConocoPhillips Company | 1672 |
52 |
| Hercules Project Company LLC | 74 |
51 |
| Linde Aktiengesellschaft | 1516 |
50 |
| Shell Oil Company | 2141 |
40 |
| Praxair Technology, Inc. | 1302 |
39 |
| Nuovo Pignone Tecnologie S.r.l. | 960 |
37 |
| Shell USA, Inc. | 1208 |
29 |
| Linde GmbH | 1261 |
24 |
| Hanwha Ocean Co., Ltd. | 120 |
24 |
| Chart Energy & Chemicals, Inc. | 59 |
23 |
| Engie | 186 |
23 |
| U.S. Bank Trust Company, National Association, AS The Notes Collateral Agent | 70 |
20 |
| Saudi Arabian Oil Company | 13044 |
19 |
| ExxonMobil Technology and Engineering Company | 1064 |
19 |
| Technip France | 705 |
18 |
| Air Products and Chemicals, Inc. | 1423 |
17 |
| Cryostar SAS | 120 |
15 |
| Other owners | 681 |