- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F25B - Refrigeration machines, plants or systemscombined heating and refrigeration systemsheat pump systems
- F25B 9/14 - Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
Patent holdings for IPC class F25B 9/14
Total number of patents in this class: 814
10-year publication summary
|
63
|
71
|
79
|
83
|
69
|
60
|
72
|
70
|
58
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Heavy Industries, Ltd. | 1925 |
172 |
| Raytheon Company | 8397 |
35 |
| Sumitomo (SHI) Cryogenics of America, Inc. | 78 |
33 |
| Oxford Instruments NanoTechnology Tools Limited | 159 |
17 |
| Toshiba Corporation | 12317 |
14 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3956 |
14 |
| CSIC Pride (Nanjing) Cryogenic Technology Co., Ltd. | 13 |
12 |
| Thermolift, Inc. | 29 |
12 |
| Toshiba Materials Co., Ltd. | 663 |
11 |
| Global Cooling, Inc. | 38 |
9 |
| Pressure Wave Systems GmbH | 14 |
9 |
| Cryo Tech Ltd. | 10 |
9 |
| Justairtech GmbH | 15 |
9 |
| NGK Insulators, Ltd. | 4944 |
7 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10922 |
7 |
| Boostheat | 20 |
7 |
| Canon Anelva Corporation | 686 |
7 |
| Secop GmbH (formerly known AS Danfoss Household Compressors GmbH) | 85 |
7 |
| Rtx Corporation | 9325 |
7 |
| Edwards Vacuum LLC | 176 |
6 |
| Other owners | 410 |