Combined filter device for filtering out particles and gases
US6200368A · kind A · utility
40Cited by
19References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Jun 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A combined filter, for removing solid particles and noxious gases from air to be delivered into the cabin of a vehicle, as part of a ventilating, heating and/or air conditioning system, comprises two layers of a non-woven tissue such as polypropylene, between which are deposited activated carbon granules. The two layers of non-woven tissue are interleaved at least partially, so as to trap the granules between them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.