Asphalt water-proofing material
US4230762A · kind A · utility
18Cited by
1References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 20, 1979 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Jul 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3764
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An asphalt water-proofing material comprising a core impregnated with petroleum asphalt. The core is made of composite material including a non-woven fabric layer formed of long filaments of synthetic resin arranged in random fashion and a woven or knitted fabric layer. The non-woven fabric and woven or knitted fabric layers are connected together by needle-punching whereby the long filaments of the non-woven fabric layer are forced into the woven or knitted fabric layer to integrally connect these layers to form said core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.