- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F24D - Domestic- or space-heating systems, e.g. central heating systemsdomestic hot-water supply systemselements 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: 448
10-year publication summary
|
22
|
41
|
27
|
24
|
28
|
33
|
35
|
57
|
69
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 48018 |
36 |
| Daikin Industries, Ltd. | 10499 |
23 |
| Samsung Electronics Co., Ltd. | 157719 |
14 |
| E.ON Sverige Aktiebolag | 84 |
14 |
| LG Electronics Inc. | 75694 |
13 |
| Octopus Energy Heating Limited | 52 |
10 |
| Rheem Manufacturing Company | 1019 |
9 |
| Energy Machines ApS | 10 |
8 |
| Qvantum Industries AB | 36 |
8 |
| Tsinghua University | 6211 |
6 |
| Rinnai Corporation | 282 |
6 |
| Trane International Inc. | 1228 |
6 |
| WaterFurnace International, Inc. | 105 |
6 |
| Mixergy Ltd | 32 |
6 |
| Panasonic Corporation | 19019 |
5 |
| Denso Corporation | 25534 |
5 |
| Daikin Europe N.v. | 218 |
5 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 2089 |
5 |
| Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd. | 266 |
5 |
| sens Geoenergy Storage AB | 7 |
5 |
| Other owners | 253 |