- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25D - Refrigerators; cold rooms; ice-boxes; cooling 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: 137
10-year publication summary
|
16
|
16
|
17
|
22
|
16
|
13
|
8
|
14
|
9
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
25 |
| Carrier Corporation | 4759 |
7 |
| Mayekawa Mfg. Co., Ltd. | 327 |
7 |
| Whirlpool Corporation | 4238 |
6 |
| BSH Hausgeräte GmbH | 5384 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| Mitsubishi Electric Corporation | 43934 |
4 |
| Evapco, Inc. | 244 |
4 |
| Hanon Systems | 1632 |
4 |
| Qingdao Haier Joint Stock Co., Ltd. | 598 |
4 |
| Heatcraft Refrigeration Products LLC | 246 |
3 |
| Hefei Hualing Co., Ltd. | 425 |
3 |
| Hefei Midea Refrigerator Co., Ltd. | 379 |
3 |
| Qingdao Haier Refrigerator Co., Ltd | 1378 |
3 |
| Haier Smart Home Co., Ltd. | 4882 |
3 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3515 |
2 |
| Midea Group Co., Ltd. | 4025 |
2 |
| Scantec Refrigeration Technologies Pty. Ltd. | 2 |
2 |
| Sinjinenc | 2 |
2 |
| Toyota Motor Corporation | 28582 |
1 |
| Other owners | 43 |