- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 676
10-year publication summary
|
60
|
60
|
49
|
81
|
79
|
69
|
84
|
51
|
58
|
23
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2471 |
92 |
| Dyson Technology Limited | 3124 |
27 |
| Eberspacher catem GmbH & Co. KG | 92 |
23 |
| Webasto SE | 1025 |
21 |
| MAHLE International GmbH | 2670 |
15 |
| Hanon Systems | 1632 |
10 |
| Mitsubishi Electric Corporation | 43934 |
8 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
8 |
| Steinel GmbH | 133 |
8 |
| LG Electronics Inc. | 69257 |
7 |
| Daikin Industries, Ltd. | 9495 |
7 |
| BorgWarner Ludwigsburg GmbH | 109 |
7 |
| Panasonic Corporation | 20786 |
6 |
| Enerco Group, Inc. | 119 |
6 |
| Kanthal AB | 95 |
6 |
| Denso Corporation | 23338 |
5 |
| DBK David + Baader GmbH | 43 |
5 |
| Dometic Sweden AB | 486 |
5 |
| Panasonic Ecology Systems Guangdong Co., Ltd. | 112 |
5 |
| Watlow Electric Manufacturing Company | 569 |
5 |
| Other owners | 400 |