Air-transparent selective sound silencer using ultra-open metamaterial
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United States of America Patent
Stats
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Dec 19, 2023
Grant Date -
Mar 25, 2021
app pub date -
Dec 4, 2020
filing date -
Aug 3, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A bilayler metamaterial silencer allows substantial fluid through the apparatus, while mitigating the propagation of sound through the apparatus, and while providing a form factor that is significantly more compact than previously-known devices. Moreover, illustrative embodiments allow a designer to specify one or both of the frequency or frequencies at which the apparatus mitigates sound propagation, and/or the bandwidth around the frequency or frequencies at which the apparatus mitigates sound propagation.
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International Classification(s)
- 2020 Application Filing Year
- F01N Class
- 814 Applications Filed
- 572 Patents Issued To-Date
- 70.28 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F01N Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jun 19, 2027 |
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