Fire resistant gypsum composition
US4664707A · kind A · utility
67Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Apr 9, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/28
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composition useful as the core of fire resistant gypsum board and comprising a major amount of set calcined gypsum and minor amounts of whisker fibers, glass fibers and clay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.