Multilayer filter element
US4826519A · kind A · utility
32Cited by
20References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1988 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Mar 11, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2275/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a filter element suitable for the purification of gas, in which spaces are constituted with porous spacer between plural membrane filters. Particles or dusts captured in the filter element of the present invention are prevented from rescattering under the impulsive pressure at the initiation or termination of the filtration, so that the high precision of the filtration can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.