Air filter device
US6797044B2 · kind B2 · utility
24Cited by
6References
7Claims
0Family size
Inventors
Key dates
| Filing date | Dec 3, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | Dec 3, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air filter device is installed on an exhaust device. The air filter device includes a filter net and one or more ultraviolet light-emitting diodes (UV LEDs). The filter net is disposed at an air passageway of the exhaust device. The UV LED is disposed on the exhaust device and located at one side of the filter net to irradiate UV light toward the filter net, hence accomplishing filtering and sterilizing effects to the air passing through the exhaust device and thus improving the quality of indoor air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.