- 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: 276
10-year publication summary
|
9
|
19
|
15
|
20
|
23
|
39
|
54
|
29
|
20
|
12
|
| 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. | 32095 |
15 |
| LG Electronics Inc. | 73714 |
6 |
| Mitsubishi Electric Corporation | 46618 |
6 |
| Wirth Doors Limited | 6 |
6 |
| Samsung Electronics Co., Ltd. | 148077 |
5 |
| Koken Ltd. | 63 |
5 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 44095 |
4 |
| Carrier Corporation | 4303 |
4 |
| Airsonett AB | 19 |
4 |
| Avidicare AB | 12 |
4 |
| Berner International Corporation | 4 |
4 |
| Biddle B.V. | 7 |
4 |
| Handelsmaatschappij Willy Deweerdt BVBA | 10 |
4 |
| Denso Corporation | 24588 |
3 |
| Duerr Systems AG | 235 |
3 |
| HCR, Inc. | 9 |
3 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1467 |
3 |
| Howorth Air Technology Limited | 7 |
3 |
| Japan Tobacco Inc. | 3603 |
3 |
| Seegene, Inc. | 420 |
3 |
| Other owners | 184 |