Airborne acoustic absorber
US11568848B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Apr 27, 2018 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Dec 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/162
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Airborne acoustic absorbers include periodic arrays of Helmholtz resonators that are covered and/or partially filled with an acoustically absorptive material, such as a thermoplastic foam. The combined structures have much broader frequency ranges of high acoustic absorption than do structures having only Helmholtz resonators or acoustically absorbing foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.