Perlite products with controlled particle size distribution
US6464770B1 · kind B1 · utility
31Cited by
10References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Aug 8, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Expanded perlite products having controlled particle size distribution, methods of producing the expanded perlite products, and methods of use thereof are provided. The expanded perlite product has, for example, a low ratio of standard deviation of particle size distribution to median particle size (for example, less than 0.63) and low median particle size (for example, less than 50 microns). The expanded perlite product may be used in a variety of applications including filter applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.