- 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 3/00 - Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification
Patent holdings for IPC class F25J 3/00
Total number of patents in this class: 620
10-year publication summary
|
58
|
40
|
22
|
30
|
26
|
12
|
14
|
15
|
12
|
4
|
| 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 |
54 |
| Praxair Technology, Inc. | 1367 |
52 |
| Fluor Technologies Corporation | 410 |
41 |
| ExxonMobil Upstream Research Company | 2525 |
38 |
| Uop LLC | 4083 |
28 |
| ConocoPhillips Company | 1657 |
28 |
| Ortloff Engineers, Ltd. | 38 |
27 |
| Air Products and Chemicals, Inc. | 1448 |
21 |
| Linde Aktiengesellschaft | 1600 |
18 |
| Lummus Technology Inc. | 322 |
16 |
| Kellogg Brown & Root LLC | 489 |
12 |
| S.M.E. Products LP | 20 |
11 |
| Technip France | 737 |
9 |
| 1304338 Alberta Ltd. | 87 |
7 |
| 1304342 Alberta Ltd. | 85 |
7 |
| Shell Internationale Research Maatschappij B.V. | 3792 |
6 |
| Chevron U.S.A. Inc. | 3774 |
6 |
| Black & Veatch Corporation | 12 |
6 |
| L'Air Liquide, Societe Anonyme a directoire et Conseil de Surveillance pour L'etude et L'exploitation des Procedes Georges Claude | 52 |
6 |
| Pilot Energy Solutions, LLC | 22 |
5 |
| Other owners | 222 |