Ceramic filter
US8607992B2 · kind B2 · utility
2Cited by
7References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2008 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Feb 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/6562
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A ceramic filter comprising: (a) from about 75% to about 95% by weight of diatomaceous earth; (b) from about 10% to about 20% by weight of a flux; and (c) from about 0.03% to about 0.4% by weight of a metallic compound; the percentages by weight being percentages by weight of the ceramic filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.