Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10939192 | Electret condenser microphone and manufacturing method thereof | Sean Gao, Guangyue Lv | 2021-03-02 |
| 10916257 | Method and device for equalizing audio signals | Jason Chen, Simon Liu, Po-Hsun Sung | 2021-02-09 |
| 10841680 | Microphone and method for processing audio signals | Sean Gao, Guangyue Lv | 2020-11-17 |
| 10771875 | Gradient micro-electro-mechanical systems (MEMS) microphone | John Charles Baumhauer, Jr., Fengyuan Li, Larry A. Marcus, Marc Reese | 2020-09-08 |
| 10154330 | Gradient micro-electro-mechanical systems (MEMS) microphone | John Charles Baumhauer, Jr., Fengyuan Li, Larry A. Marcus, Marc Reese | 2018-12-11 |
| 8804982 | Dual cell MEMS assembly | Jeffrey Phillip McAteer, John Charles Baumhauer, Jr. | 2014-08-12 |
| 8515084 | Passive sound pressure level limiter with balancing circuit | Joshua James Barr, Medford Alan Dyer, Christopher Todd Welsh | 2013-08-20 |
| 8340307 | Passive sound pressure level limiter | Joshua James Barr, Medford Alan Dyer, Christopher Todd Welsh | 2012-12-25 |
| 8155366 | Transducer package with interior support frame | John Charles Baumhauer, Jr., Joshua R. Barber, Christopher Todd Welsh, Jeffrey Phillip McAteer | 2012-04-10 |
| 8107652 | Controlled leakage omnidirectional electret condenser microphone element | Medford Alan Dyer, Christopher Todd Welsh, Jeffrey Phillip McAteer, John Charles Baumhauer, Jr. | 2012-01-31 |
| 7825509 | Transducer package with transducer die unsupported by a substrate | John Charles Baumhauer, Jr., Joshua R. Barber, Christopher Todd Welsh, Jeffrey Phillip McAteer | 2010-11-02 |
| 7790492 | Method for fabricating a transducer package with the transducer die unsupported by a substrate | John Charles Baumhauer, Jr., Joshua R. Barber, Christopher Todd Welsh, Jeffrey Phillip McAteer | 2010-09-07 |
| 7787643 | System and method for RF immunity of electret condenser microphone | — | 2010-08-31 |
| 7751575 | Microphone system for communication devices | John Charles Baumhauer, Jr., Larry A. Marcus, Christopher Todd Welsh, Jeffrey Phillip McAteer | 2010-07-06 |
| 7646865 | Telephone handset coupling system | Christopher Todd Welsh, Michael Thomas Frank, John Charles Baumhauer, Jr., Larry A. Marcus | 2010-01-12 |
| 6683964 | Direction finder | John Charles Baumhauer, Jr., Jeffrey Phillip McAteer | 2004-01-27 |
| 6147979 | System and method for echo cancellation in a communication system | David Lee Rowley | 2000-11-14 |
| D432119 | Microphone | Jeffrey Phillip McAteer, Christopher Todd Welsh | 2000-10-17 |
| 6041118 | Architecture for telephone set | Eric B. Williams | 2000-03-21 |
| 5838786 | Intelligent acoustic systems peripheral | David Alan Brown, Wayne Allen Weise, James E. West | 1998-11-17 |
| 5764512 | Intelligent acoustic systems peripheral | Wayne Allen Weise | 1998-06-09 |
| 5699420 | Bell sound synthesizer | — | 1997-12-16 |
| 5625690 | Software pay per use system | Robert E. Reinke | 1997-04-29 |
| 5515445 | Long-time balancing of omni microphones | John Charles Baumhauer, Jr., Jeffrey Phillip McAteer, Kevin D. Willis | 1996-05-07 |
| 5506908 | Directional microphone system | John Charles Baumhauer, Jr., Jeffrey Phillip McAteer, Christopher Todd Welsh, Kevin D. Willis | 1996-04-09 |