- 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: 412
10-year publication summary
|
23
|
17
|
33
|
24
|
22
|
27
|
32
|
31
|
51
|
48
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 46346 |
37 |
| Daikin Industries, Ltd. | 10058 |
21 |
| E.ON Sverige Aktiebolag | 85 |
14 |
| LG Electronics Inc. | 73476 |
11 |
| Rheem Manufacturing Company | 986 |
9 |
| Energy Machines ApS | 10 |
8 |
| Octopus Energy Heating Limited | 37 |
8 |
| Tsinghua University | 5943 |
6 |
| Rinnai Corporation | 252 |
6 |
| Trane International Inc. | 1193 |
6 |
| Mixergy Ltd | 29 |
6 |
| Qvantum Industries AB | 29 |
6 |
| Samsung Electronics Co., Ltd. | 147334 |
5 |
| Panasonic Corporation | 20059 |
5 |
| Denso Corporation | 24404 |
5 |
| Daikin Europe N.v. | 206 |
5 |
| Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd. | 210 |
5 |
| WaterFurnace International, Inc. | 105 |
5 |
| sens Geoenergy Storage AB | 7 |
5 |
| IMBY Energy, Inc. | 6 |
5 |
| Other owners | 234 |