- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F25B - Refrigeration machines, plants or systemscombined heating and refrigeration systemsheat pump systems
- F25B 9/02 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effectCompression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using vortex effect
Patent holdings for IPC class F25B 9/02
Total number of patents in this class: 137
10-year publication summary
|
18
|
11
|
14
|
11
|
7
|
2
|
8
|
8
|
10
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Raytheon Company | 8447 |
9 |
| Sumitomo Heavy Industries, Ltd. | 2133 |
7 |
| PAX Scientific, Inc. | 10 |
6 |
| Lockheed Martin Corporation | 3254 |
4 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4141 |
4 |
| LG Electronics Inc. | 76219 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9231 |
3 |
| Shell Canada Limited | 45 |
3 |
| Edwards Vacuum LLC | 188 |
3 |
| Linde Aktiengesellschaft | 1411 |
3 |
| Safran Electronics & Defense | 1394 |
3 |
| Illinois Tool Works Inc. | 11894 |
2 |
| Shell Internationale Research Maatschappij B.V. | 3391 |
2 |
| The Boeing Company | 20212 |
2 |
| Compactgtl Limited | 23 |
2 |
| Evapco, Inc. | 319 |
2 |
| NDSU Research Foundation | 250 |
2 |
| Praxair Technology, Inc. | 1202 |
2 |
| Pressure Wave Systems GmbH | 16 |
2 |
| Questar Gas Company | 18 |
2 |
| Other owners | 71 |