- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F24F - Air-conditioningair-humidificationventilationuse of air currents for screening
- F24F 9/00 - Use of air currents for screening, e.g. air curtains
Patent holdings for IPC class F24F 9/00
Total number of patents in this class: 273
10-year publication summary
|
11
|
23
|
15
|
21
|
25
|
41
|
55
|
29
|
20
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
14 |
| Wirth Doors Limited | 6 |
6 |
| LG Electronics Inc. | 71039 |
5 |
| Mitsubishi Electric Corporation | 44851 |
5 |
| Biddle B.V. | 8 |
5 |
| Koken Ltd. | 62 |
5 |
| Samsung Electronics Co., Ltd. | 139001 |
4 |
| Carrier Corporation | 4451 |
4 |
| Airsonett AB | 18 |
4 |
| Avidicare AB | 12 |
4 |
| Berner International Corporation | 5 |
4 |
| Handelsmaatschappij Willy Deweerdt BVBA | 10 |
4 |
| Denso Corporation | 23769 |
3 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 40608 |
3 |
| Duerr Systems AG | 200 |
3 |
| HCR, Inc. | 9 |
3 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1403 |
3 |
| Howorth Air Technology Limited | 7 |
3 |
| Japan Tobacco Inc. | 3488 |
3 |
| Seegene, Inc. | 364 |
3 |
| Other owners | 185 |