Acoustical tile containing treated perlite
US5964934A · kind A · utility
39Cited by
36References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition suitable for making acoustical tiles in a water-felting process comprises expanded perlite, cellulosic fiber, and, optionally, a secondary binder and mineral wool. The perlite has been treated to reduce its water retention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.