Soundproof material
US12027148B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2021 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Jan 18, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2571/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A soundproof material may comprise, in order: a first electrically conductive ferromagnetic layer, a charged insulator layer, and a second electrically conductive ferromagnetic layer. A charged site at the charged insulator layer may be electrically insulated from the first electrically conductive ferromagnetic layer and/or the second electrically conductive ferromagnetic layer. When a sound causes vibration of any among the first electrically conductive ferromagnetic layer, the charged insulator layer, and/or the second electrically conductive ferromagnetic layer, this causes alteration of a magnetic field at the first electrically conductive ferromagnetic layer and/or the second electrically conductive ferromagnetic layer, soundproofing being carried out when acoustic energy of the sound wave is lost as thermal energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.