- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 8/97 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes for removing tobacco smoke
Patent holdings for IPC class F24F 8/97
Total number of patents in this class: 4
10-year publication summary
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0
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0
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0
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1
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0
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0
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4
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1
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1
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1
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Jinan Shengquan Group Share-Holding Co., Ltd. | 79 |
1 |
| Ushio Denki Kabushiki Kaisha | 1088 |
1 |
| Dechert, Michael Dieter | 1 |
1 |
| Georg, Silvano | 1 |
1 |
| Other owners | 0 |