Filter and process for the production thereof
US4983193A · kind A · utility
35Cited by
16References
3Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/1291
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter for removing dust from fluids, which comprises fibers bonded each other with a binder and hot-pressed, having a fiber density of 0.01 to 0.1 at the fluid inlet side and a fiber density of 0.05 to 0.5 at the fluid outlet side with a continuous fiber density gradient and having a uniform distribution of fiber material in direction of thickness, and a process for the production thereof. The filter is particularly useful as an air filter for automobiles or air conditioners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.