Acoustically active articles
US10669211B2 · kind B2 · utility
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11References
19Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 22, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Dec 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/025
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Articles and methods of making and using the articles are provided. The articles include inorganic agglomerates having an average dimension in a range from about 50 microns to about 2 mm. The porous agglomerates each include a network of carbon or silica, and metal oxide particles embedded in the network. Some agglomerates are capable of lowering a resonant frequency of an acoustic device when the resonant frequency is in a range from about 50 Hz to about 1500 Hz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.