- 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: 752
10-year publication summary
|
52
|
81
|
80
|
71
|
85
|
56
|
60
|
67
|
39
|
21
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Valeo Systemes Thermiques | 2825 |
95 |
| Dyson Technology Limited | 3977 |
30 |
| Eberspacher catem GmbH & Co. KG | 102 |
24 |
| Webasto SE | 1188 |
22 |
| Hanon Systems | 2106 |
11 |
| MAHLE International GmbH | 2911 |
11 |
| LG Electronics Inc. | 75654 |
9 |
| Mitsubishi Electric Corporation | 47971 |
8 |
| GREE Electric Appliances, Inc. of Zhuhai | 3316 |
8 |
| Watlow Electric Manufacturing Company | 575 |
8 |
| Zhejiang Prulde Electric Appliance Co.,Ltd. | 147 |
8 |
| Tutco LLC | 46 |
8 |
| Kanthal AB | 114 |
8 |
| Daikin Industries, Ltd. | 10478 |
7 |
| BorgWarner Ludwigsburg GmbH | 104 |
7 |
| Dometic Sweden AB | 591 |
7 |
| Leister Technologies AG | 60 |
7 |
| Panasonic Corporation | 19060 |
6 |
| Enerco Group, Inc. | 125 |
6 |
| GD Midea Environment Appliances MFG Co., Ltd. | 234 |
6 |
| Other owners | 456 |