Vienna
Austria
9
2026-05-14
The entities that hold a legal rights for patent applications filed by inventor Perkmann Michael:
Michael Perkmann from Vienna, AT has applied for patents for these inventions. The list has both pending applications and granted patents:
ACTIVE NOISE CONTROL CLASSIFICATION SYSTEM
#2 | 2023-05-25Acoustic filters for microphone noise mitigation and transducer venting
#3 | 2022-05-19Calibration of active noise-cancelling headphones
#4 | 2021-12-02Acoustic filters for microphone noise mitigation and transducer venting
#5 | 2020-03-12In-ear active noise-cancelling earphone
#6 | 2014-12-04Plug earphone or a concha earphone
#7 | 2013-11-28Earphone with active suppression of ambient noise
#8 | 2013-01-31Noise reducing sound reproduction system
#9 | 2011-08-25Active noise reduction system
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