Selectively openable filtering assembly
US4898602A · kind A · utility
1Cited by
18References
22Claims
0Family size
Inventor
Key dates
| Filing date | Mar 28, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Mar 28, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2271/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A selectively openable filtering assembly includes a filter member for treating a fluid passing therethrough and a cover member for sealing the filter member against communication with the environment. A remotely activated device is provided for opening the cover member to expose the filter member to the environment when it is desired to use the filter member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.