Cooking oil filter
US4988440A · kind A · utility
24Cited by
26References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Aug 18, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved filter comprising a porous sheet of substantially uniform thickness having the following composition: 15% to 35% activated carbon; 15% to 40% calcium silicate, magnesium silicate, or mixtures thereof; 25% to 40% cellulosic fiber; up to 2% resin binder; and, optionally, 0% to 30% diatomaceous earth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.