Acoustically porous building materials
US4585685A · kind A · utility
90Cited by
3References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1985 |
| Grant date | Apr 29, 1986 |
| Priority date | — |
| Expiry date | Jan 14, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/25
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to acoustically porous building materials which are produced by disposing an aggregate material on the surface of a dry-formed web comprising a fibrous material and an organic binder, and consolidating the composite material such that the aggregate material is embedded in the web. The resulting product is acoustically porous but, in one preferred embodiment, the embedding process provides a substantially planar surface which is relatively non-friable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.