Air induction filter assembly
US6464761B1 · kind B1 · utility
91Cited by
29References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air induction filter assembly includes a housing and a plurality of filter layers disposed in the housing. One of the filter layers is a carbon impregnated polyurethane foam layer to remove residual hydrocarbon (HC) vapors diffusing through an air inlet to the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.