Filtration device for air purification appliance
US10561983B2 · kind B2 · utility
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3References
12Claims
0Family size
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Key dates
| Filing date | Sep 24, 2015 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Sep 24, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F8/15
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtration device for an air purification appliance includes a first filtering cartridge structure containing a classic absorbent or adsorbent material selected from activated carbon or zeolite and a second, different filtering cartridge structure holding a filtering medium consisting of a specific adsorbent material which is porous and functionalized with at least one probe molecule in such a way as to trap aldehyde-type chemical contaminants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.