- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F25D - Refrigeratorscold roomsice-boxescooling or freezing apparatus not otherwise provided for
- F25D 21/12 - Removing frost by hot-fluid circulating system separate from the refrigerant system
Patent holdings for IPC class F25D 21/12
Total number of patents in this class: 139
10-year publication summary
|
16
|
17
|
22
|
16
|
13
|
8
|
16
|
9
|
7
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 72807 |
24 |
| Carrier Corporation | 4354 |
9 |
| Mayekawa Mfg. Co., Ltd. | 339 |
8 |
| Samsung Electronics Co., Ltd. | 145416 |
5 |
| Whirlpool Corporation | 4406 |
5 |
| BSH Hausgeräte GmbH | 5518 |
5 |
| Mitsubishi Electric Corporation | 45962 |
4 |
| Hanon Systems | 1923 |
4 |
| Qingdao Haier Joint Stock Co., Ltd. | 596 |
4 |
| Qingdao Haier Refrigerator Co., Ltd | 1564 |
4 |
| Haier Smart Home Co., Ltd. | 5441 |
4 |
| Evapco, Inc. | 288 |
3 |
| Heatcraft Refrigeration Products LLC | 257 |
3 |
| Hefei Hualing Co., Ltd. | 485 |
3 |
| Hefei Midea Refrigerator Co., Ltd. | 441 |
3 |
| Watergen Ltd. | 36 |
3 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3967 |
2 |
| Midea Group Co., Ltd. | 4526 |
2 |
| Scantec Refrigeration Technologies Pty. Ltd. | 2 |
2 |
| Sinjinenc | 2 |
2 |
| Other owners | 40 |