Electret Device
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
Mar 24, 2022
filing date -
Mar 24, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a long-life electret device preventing charge degradation of an electret element sealed in a closed space. The provided electret device includes a package member; a lid member; and an electret element. The lid member seals the package member to thereby form a closed space, the electret element is placed in the closed space, and a hydrogen getter is included in at least part of an inside of the closed space.
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