Acoustic absorber and method for absorbing sound
US4152474A · kind A · utility
24Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1978 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Apr 21, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/25
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An acoustic absorber and a method for absorbing sound utilize a substrate having a plurality of openings therethrough. An organic polymer coating covers the substrate and partially fills the openings in the substrate to form an acoustic absorber having a porosity not greater than 60 CFM/ft.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.