Issued Patents All Time
Showing 51–75 of 104 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8958580 | Parametric transducers and related methods | — | 2015-02-17 |
| 8934650 | Low profile parametric transducers and related methods | John Bryan Bolton, Julian Groeli, Jin Chen | 2015-01-13 |
| 8929575 | Hearing enhancement systems and methods | — | 2015-01-06 |
| 8903104 | Video gaming system with ultrasonic speakers | — | 2014-12-02 |
| 8903116 | Parametric transducers and related methods | — | 2014-12-02 |
| 8767979 | Parametric transducer system and related methods | — | 2014-07-01 |
| 8718297 | Parametric transducer and related methods | — | 2014-05-06 |
| 8391514 | Parametric transducer systems and related methods | — | 2013-03-05 |
| 8199931 | Parametric loudspeaker with improved phase characteristics | Joseph O. Norris, James J. Croft, III | 2012-06-12 |
| 7298853 | Parametric virtual speaker and surround-sound system | James J. Croft, III | 2007-11-20 |
| 7198223 | Ultralight coaxial rotor aircraft | Arthur Phelps, Dwaine Barnes, Eugene Rock, Emitt Wallace | 2007-04-03 |
| 7088830 | Parametric ring emitter | James J. Croft, III, Vaughn W. North | 2006-08-08 |
| 6925187 | Horn array emitter | James J. Croft, III | 2005-08-02 |
| 6876330 | Reconfigurable antennas | Igor Alexeff, Theodore R. Anderson | 2005-04-05 |
| 6850623 | Parametric loudspeaker with improved phase characteristics | Joseph O. Norris, James J. Croft, III | 2005-02-01 |
| 6842146 | Plasma filter antenna system | Igor Alexeff, Theodore R. Anderson | 2005-01-11 |
| 6577738 | Parametric virtual speaker and surround-sound system | James J. Croft, III | 2003-06-10 |
| 6512496 | Expandible antenna | Igor Alexeff, Ted Anderson | 2003-01-28 |
| 6466674 | Method and apparatus for eliminating audio feedback | — | 2002-10-15 |
| 6460802 | Helicopter propulsion and control system | — | 2002-10-08 |
| 6393129 | Paper structures for speaker transducers | Terry J. Conrad, James J. Croft, III | 2002-05-21 |
| 6369763 | Reconfigurable plasma antenna | Ted Anderson, Igor Alexeff | 2002-04-09 |
| 6359990 | Parametric ring emitter | — | 2002-03-19 |
| 6304662 | Sonic emitter with foam stator | James J. Croft, III | 2001-10-16 |
| 6229899 | Method and device for developing a virtual speaker distant from the sound source | James J. Croft, III | 2001-05-08 |