- 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 3/02 - Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
Patent holdings for IPC class F25J 3/02
Total number of patents in this class: 1281
10-year publication summary
|
109
|
109
|
143
|
121
|
188
|
87
|
86
|
72
|
59
|
19
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
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 | 3515 |
187 |
| Saudi Arabian Oil Company | 11322 |
81 |
| ExxonMobil Upstream Research Company | 2525 |
74 |
| Linde Aktiengesellschaft | 1600 |
73 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
56 |
| Praxair Technology, Inc. | 1367 |
51 |
| Uop LLC | 4083 |
50 |
| Air Products and Chemicals, Inc. | 1448 |
42 |
| Technip France | 737 |
39 |
| Aramco Services Company | 3504 |
30 |
| Fluor Technologies Corporation | 410 |
29 |
| ConocoPhillips Company | 1657 |
28 |
| Shell Oil Company | 2196 |
17 |
| BCCK Holding Company | 21 |
17 |
| Lummus Technology LLC | 365 |
16 |
| Lummus Technology Inc. | 322 |
13 |
| Linde GmbH | 1122 |
13 |
| 1304338 Alberta Ltd. | 87 |
12 |
| 1304342 Alberta Ltd. | 85 |
12 |
| L'Air Liquide, Societe Anonyme pour L'etude et L'exploitation des Proced ES Georges Claude | 296 |
12 |
| Other owners | 429 |