Air purifier
US11471810B2 · kind B2 · utility
0Cited by
2References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 11, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jan 2, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2275/206
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air purifier includes a filter, a fan to suction air through the filter, a first case configured to cover the filter and the fan, and a second case overlapping with the first case. The first and second cases may be moveable in a vertical direction such that the second case may be raised to lengthen the air purifier and the first case may be raised to expose the filter for replacement. The second case may be provided outside of the first case and have a side discharge grill and a top discharge grill, which may each be selectively opened and closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.