Filter medium and method of manufacturing the same
US4645597A · kind A · utility
5Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | May 30, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/28033
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filtering member made of a filtering paper or nonwoven fabric tape is folded into a V-shaped cross sectional configuration, absorbing agents are uniformly dropped into the folded filtering member, the filtering member is further folded to wrap the absorbing agents therein and finally the filtering member is twisted to form a filter medium in the form of a string. The absorbing agents may be active carbon, active kaoline, water absorbing resin, magnetized magnetic material or combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.