- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25B - Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat 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: 747
10-year publication summary
|
70
|
63
|
71
|
79
|
81
|
69
|
59
|
71
|
64
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Heavy Industries, Ltd. | 1670 |
156 |
| Raytheon Company | 8535 |
35 |
| Sumitomo (SHI) Cryogenics of America, Inc. | 80 |
33 |
| Oxford Instruments NanoTechnology Tools Limited | 145 |
17 |
| Toshiba Corporation | 12017 |
14 |
| Thermolift, Inc. | 32 |
14 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
13 |
| CSIC Pride (Nanjing) Cryogenic Technology Co., Ltd. | 14 |
12 |
| Sharp Kabushiki Kaisha | 18957 |
12 |
| Toshiba Materials Co., Ltd. | 600 |
11 |
| Global Cooling, Inc. | 36 |
9 |
| Justairtech GmbH | 15 |
9 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
8 |
| Pressure Wave Systems GmbH | 13 |
8 |
| NGK Insulators, Ltd. | 4589 |
7 |
| Boostheat | 23 |
7 |
| Canon Anelva Corporation | 676 |
7 |
| Secop GmbH (formerly known AS Danfoss Household Compressors GmbH) | 95 |
7 |
| Rtx Corporation | 8674 |
7 |
| Twinbird Corporation | 35 |
6 |
| Other owners | 355 |