- 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: 700
10-year publication summary
|
60
|
49
|
81
|
80
|
70
|
85
|
53
|
60
|
61
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2597 |
92 |
| Dyson Technology Limited | 3412 |
27 |
| Eberspacher catem GmbH & Co. KG | 93 |
24 |
| Webasto SE | 1124 |
22 |
| Hanon Systems | 1814 |
11 |
| MAHLE International GmbH | 2690 |
11 |
| LG Electronics Inc. | 70898 |
8 |
| Mitsubishi Electric Corporation | 44738 |
8 |
| GREE Electric Appliances, Inc. of Zhuhai | 3149 |
8 |
| Steinel GmbH | 134 |
8 |
| Daikin Industries, Ltd. | 9810 |
7 |
| BorgWarner Ludwigsburg GmbH | 105 |
7 |
| Tutco LLC | 45 |
7 |
| Panasonic Corporation | 20327 |
6 |
| Enerco Group, Inc. | 120 |
6 |
| Kanthal AB | 108 |
6 |
| Denso Corporation | 23721 |
5 |
| DBK David + Baader GmbH | 46 |
5 |
| Dometic Sweden AB | 511 |
5 |
| GENTHERM GmbH | 256 |
5 |
| Other owners | 422 |