Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9605928 | Apparatus and method for broad spectrum radiation attenuation | D. Michael Shields | 2017-03-28 |
| 9584904 | Spherically housed loudspeaker system | D. Michael Shields | 2017-02-28 |
| 9532143 | Low frequency equalization for loudspeaker system | D. Michael Shiekts | 2016-12-27 |
| 9407988 | Method and apparatus for audio processing | D. Michael Shields | 2016-08-02 |
| 9392357 | Method and apparatus for enhanced stimulation of the limbic auditory response | — | 2016-07-12 |
| 9338555 | Earphones and hearing aids with equalization | — | 2016-05-10 |
| 8948273 | Method and apparatus for wired signal transmission | D. Michael Shields | 2015-02-03 |
| 8929560 | Method and apparatus for audio processing | D. Michael Shields | 2015-01-06 |
| 8885869 | Non-directional transducer | D. Michael Shields | 2014-11-11 |
| 8850947 | Apparatus and method for broad spectrum radiation attenuation | D. Michael Shields | 2014-10-07 |
| 8824724 | Audio transducer | D. Michael Shields | 2014-09-02 |
| 8687818 | Method for dynamically adjusting the spectral content of an audio signal | Patrick Taylor, D. Michael Shields | 2014-04-01 |
| 8611557 | Method and apparatus for audio processing | D. Michael Shields | 2013-12-17 |
| 8422713 | Spherically housed loudspeaker system | D. Michael Shields | 2013-04-16 |
| 8359965 | Apparatus and method for broad spectrum radiation attenuation | D. Michael Shields | 2013-01-29 |
| 8144900 | Speaker system | D. Michael Shields | 2012-03-27 |
| 8098849 | Low frequency equalization for loudspeaker system | D. Michael Shields | 2012-01-17 |
| 8094868 | Non-directional transducer | D. Michael Shields | 2012-01-10 |
| 7899192 | Method for dynamically adjusting the spectral content of an audio signal | Patrick Taylor, D. Michael Shields | 2011-03-01 |
| 7796775 | Spherically housed loudspeaker system | D. Michael Shields | 2010-09-14 |
| 7672472 | Audio transducer | D. Michael Shields | 2010-03-02 |
| D572236 | Spherically shaped loudspeaker | D. Michael Shields | 2008-07-01 |
| D541258 | Loudspeaker system | D. Michael Shields | 2007-04-24 |
| 6628793 | Speaker system | Mark Porzilli | 2003-09-30 |
| 6485241 | Surface mount ring assembly for loudspeaker | — | 2002-11-26 |