Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12111428 | Acoustic distance ranging system | David Grant Cason | 2024-10-08 |
| 12028678 | Proximity microphone | Brent Robert Shumard, Emily Ann Wigley, Roger Stephen Grinnip, III | 2024-07-02 |
| 11750972 | One-dimensional array microphone with improved directivity | Brent Robert Shumard, James Michael Pessin, Emily Ann Wigley | 2023-09-05 |
| 11678109 | Offset cartridge microphones | Brent Robert Shumard, Gregory H. Canfield | 2023-06-13 |
| 11297426 | One-dimensional array microphone with improved directivity | Brent Robert Shumard, James Michael Pessin, Emily Ann Wigley | 2022-04-05 |
| 10547935 | Offset cartridge microphones | Brent Robert Shumard, Gregory H. Canfield | 2020-01-28 |
| 10009684 | Offset cartridge microphones | Brent Robert Shumard, Gregory H. Canfield | 2018-06-26 |
| 9554207 | Offset cartridge microphones | Brent Robert Shumard, Gregory H. Canfield | 2017-01-24 |
| 8818009 | Dual diaphragm dynamic microphone transducer | Charles S. Argento, Roger Stephen Grinnip, III | 2014-08-26 |
| 8644477 | Digital Microphone Automixer | Gregory H. Canfield | 2014-02-04 |
| 7218742 | Condenser microphone assembly | Kelly Q. Kay | 2007-05-15 |
| 6788791 | Delay network microphones with harmonic nesting | Steven S. Smith, Richard J. Santiago, Alan J. Usdrowski | 2004-09-07 |
| 6741709 | Condenser microphone assembly | Kelly Q. Kay | 2004-05-25 |
| 4811019 | Delta modulation encoding/decoding circuitry | Stephen D. Julstrom | 1989-03-07 |