Sound transmission material, sound control plane structure including building use using the sound transmission material, windscreen for microphone, protective grille, sound transmission projection screen, and speaker
US9218800B2 · kind B2 · utility
2Cited by
13References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2012 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Sep 13, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2001/8452
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sound transmission material is made of fibers entangled with each other and has a self-standing property and a high performance sound transmission property, namely the TABER™ stiffness is not less than 5 mN×m, the bending resistance is not less than 100 mN, the porosity is not less than 50%, and the thickness is not more than 3 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.