- 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: 1615
10-year publication summary
|
172
|
189
|
146
|
109
|
121
|
137
|
120
|
125
|
97
|
62
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
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 | 4113 |
202 |
| Shell Internationale Research Maatschappij B.V. | 3407 |
104 |
| ExxonMobil Upstream Research Company | 2311 |
65 |
| Honeywell LNG LLC | 99 |
57 |
| ConocoPhillips Company | 1704 |
53 |
| Linde Aktiengesellschaft | 1426 |
46 |
| Praxair Technology, Inc. | 1224 |
43 |
| Nuovo Pignone Tecnologie S.r.l. | 1197 |
41 |
| Shell Oil Company | 2075 |
40 |
| Shell USA, Inc. | 1309 |
32 |
| Chart Energy & Chemicals, Inc. | 77 |
30 |
| Hanwha Ocean Co., Ltd. | 152 |
26 |
| Linde GmbH | 1351 |
24 |
| Engie | 182 |
23 |
| Saudi Arabian Oil Company | 14161 |
21 |
| ExxonMobil Technology and Engineering Company | 1345 |
21 |
| Air Products and Chemicals, Inc. | 1468 |
20 |
| U.S. Bank Trust Company, National Association, AS The Notes Collateral Agent | 66 |
19 |
| Gaztransport et Technigaz | 628 |
16 |
| Technip France | 683 |
16 |
| Other owners | 716 |