Inventor · disambiguated record
Michael Perkmann
Also filed as: PERKMANN MICHAEL
8 granted patents·27 citations·filing 2011–2022
79Inventor score
Top patents by PatentIndex Score
8 records- 0188US11528551B2Acoustic filters for microphone noise mitigation and transducer ventingSONOS INC·Filed 2021·Granted Dec 13, 2022·2 cites·19 claims
- 0288US8903101B2Active noise reduction systemCHRISTOPH MARKUS·Filed 2011·Granted Dec 2, 2014·15 cites·19 claims
- 0375US9613612B2Noise reducing sound reproduction systemPERKMANN MICHAEL·Filed 2012·Granted Apr 4, 2017·10 cites·23 claims
- 0466US12003915B2Acoustic filters for microphone noise mitigation and transducer ventingSONOS INC·Filed 2022·Granted Jun 4, 2024·0 cites·13 claims
- 0546US10477312B2Earphone with active suppression of ambient noiseAKG ACOUSTICS GMBH·Filed 2013·Granted Nov 12, 2019·0 cites·17 claims
- 0640US11115749B2In-ear active noise-cancelling earphoneAUSTRIAN AUDIO GMBH·Filed 2019·Granted Sep 7, 2021·0 cites·11 claims
- 0740US9456269B2Plug earphone or a concha earphoneAKG ACOUSTICS GMBH·Filed 2014·Granted Sep 27, 2016·0 cites·20 claims
- 0837US11587543B2Calibration of active noise-cancelling headphonesAUSTRIAN AUDIO GMBH·Filed 2021·Granted Feb 21, 2023·0 cites·10 claims
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