Fire-resistant gypsum board
US4564544A · kind A · utility
30Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1983 |
| Grant date | Jan 14, 1986 |
| Priority date | — |
| Expiry date | Dec 1, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31989
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A fire-retardant gypsum wallboard having, in the gypsum core, about 2% by weight of a feldspar-free muscovite, in combination with other minor additives including 1/2 inch long glass fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.