- 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 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: 1501
10-year publication summary
|
88
|
172
|
189
|
146
|
109
|
120
|
135
|
116
|
116
|
5
|
| 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 | 3585 |
155 |
| Shell Internationale Research Maatschappij B.V. | 3721 |
130 |
| ExxonMobil Upstream Research Company | 2456 |
65 |
| Linde Aktiengesellschaft | 1551 |
54 |
| ConocoPhillips Company | 1677 |
52 |
| Shell Oil Company | 2155 |
40 |
| Air Products and Chemicals, Inc. | 1426 |
38 |
| Praxair Technology, Inc. | 1336 |
36 |
| Nuovo Pignone Tecnologie S.r.l. | 852 |
35 |
| Hercules Project Company LLC | 49 |
33 |
| Shell USA, Inc. | 1134 |
29 |
| Linde GmbH | 1218 |
22 |
| Hanwha Ocean Co., Ltd. | 101 |
21 |
| Chart Energy & Chemicals, Inc. | 53 |
20 |
| L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 304 |
20 |
| U.S. Bank Trust Company, National Association, AS The Notes Collateral Agent | 71 |
20 |
| Engie | 176 |
19 |
| Saudi Arabian Oil Company | 12404 |
19 |
| Technip France | 717 |
19 |
| ExxonMobil Technology and Engineering Company | 905 |
19 |
| Other owners | 655 |