- 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: 872
10-year publication summary
|
71
|
79
|
83
|
69
|
60
|
72
|
73
|
62
|
60
|
46
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Heavy Industries, Ltd. | 2112 |
184 |
| Raytheon Company | 8448 |
34 |
| Sumitomo (SHI) Cryogenics of America, Inc. | 78 |
33 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4117 |
16 |
| Maybell Quantum Industries, Inc. | 27 |
14 |
| Thermolift, Inc. | 28 |
13 |
| CSIC Pride (Nanjing) Cryogenic Technology Co., Ltd. | 13 |
12 |
| Pressure Wave Systems GmbH | 16 |
11 |
| Justairtech GmbH | 19 |
11 |
| Edwards Vacuum LLC | 183 |
9 |
| Global Cooling, Inc. | 38 |
9 |
| Oxford Instruments NanoTechnology Tools Limited | 143 |
9 |
| Toshiba Materials Co., Ltd. | 563 |
9 |
| Cryo Tech Ltd. | 10 |
9 |
| Bluefors Oy | 51 |
8 |
| Rtx Corporation | 10102 |
8 |
| NGK Insulators, Ltd. | 5236 |
7 |
| Canon Anelva Corporation | 684 |
7 |
| Nederlandse Organisatie voor Toegepast-natuurwetenschappelijk Onderzoek TNO | 2440 |
7 |
| Secop GmbH (formerly known AS Danfoss Household Compressors GmbH) | 82 |
7 |
| Other owners | 455 |