Thermally treated expanded perlite
US9284200B2 · kind B2 · utility
1Cited by
56References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2009 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Dec 30, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/001
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A thermally treated expanded perlite that can be coated or impregnated with at least one active material and the use of the thermally treated expanded perlite as a light-weight filtration media. Methods for forming thermally treated expanded perlite as well as methods for forming thermally treated perlite coated or impregnated with an active material are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.