Fire resistant gypsum board
US4722866A · kind A · utility
71Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1987 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31634
- 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.