Asbestos-free drywall joint compound utilizing sepiolite clay as asbestos substitute
US4370167A · kind A · utility
22Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1982 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Mar 15, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/1652
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Drywall joint compounds in which asbestos fiber has been omitted and the physical characteristics which have heretofore depended on the presence of asbestos fiber or on attapulgite clay have been obtained by the inclusion of finely powdered sepiolite clay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.