- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24D - Domestic- or space-heating systems, e.g. central heating systems; domestic hot-water supply systems; elements or components therefor
- F24D 3/18 - Hot-water central heating systems using heat pumps
Patent holdings for IPC class F24D 3/18
Total number of patents in this class: 345
10-year publication summary
|
23
|
27
|
22
|
41
|
27
|
24
|
28
|
32
|
32
|
17
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
36 |
| Daikin Industries, Ltd. | 9495 |
22 |
| E.ON Sverige Aktiebolag | 87 |
14 |
| LG Electronics Inc. | 69257 |
11 |
| Rheem Manufacturing Company | 861 |
8 |
| Energy Machines ApS | 9 |
8 |
| Tsinghua University | 5426 |
6 |
| Panasonic Corporation | 20786 |
5 |
| Denso Corporation | 23338 |
5 |
| Daikin Europe N.v. | 171 |
5 |
| Rinnai Corporation | 204 |
5 |
| WaterFurnace International, Inc. | 98 |
5 |
| sens Geoenergy Storage AB | 8 |
5 |
| IMBY Energy, Inc. | 6 |
5 |
| Sharp Kabushiki Kaisha | 18957 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
4 |
| Boostheat | 23 |
4 |
| Lennox Industries Inc. | 1088 |
4 |
| Trane International Inc. | 1123 |
4 |
| Samsung Electronics Co., Ltd. | 131630 |
3 |
| Other owners | 181 |