- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F24H - Fluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general
- F24H 3/04 - Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
Patent holdings for IPC class F24H 3/04
Total number of patents in this class: 727
10-year publication summary
|
60
|
49
|
80
|
79
|
68
|
80
|
50
|
59
|
61
|
27
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2737 |
94 |
| Dyson Technology Limited | 3673 |
29 |
| Eberspacher catem GmbH & Co. KG | 98 |
24 |
| Webasto SE | 1170 |
22 |
| Hanon Systems | 1974 |
11 |
| MAHLE International GmbH | 2790 |
11 |
| LG Electronics Inc. | 73578 |
9 |
| Mitsubishi Electric Corporation | 46449 |
8 |
| GREE Electric Appliances, Inc. of Zhuhai | 3251 |
8 |
| Steinel GmbH | 138 |
8 |
| Zhejiang Prulde Electric Appliance Co.,Ltd. | 125 |
8 |
| Daikin Industries, Ltd. | 10071 |
7 |
| BorgWarner Ludwigsburg GmbH | 104 |
7 |
| Tutco LLC | 43 |
7 |
| Panasonic Corporation | 20042 |
6 |
| Dometic Sweden AB | 562 |
6 |
| Enerco Group, Inc. | 124 |
6 |
| Leister Technologies AG | 67 |
6 |
| Truma Gerätetechnik GmbH & Co. KG | 284 |
6 |
| GD Midea Environment Appliances MFG Co., Ltd. | 213 |
6 |
| Other owners | 438 |