Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8488826 | Horn enclosure for combining sound output | — | 2013-07-16 |
| 8457341 | Sound reproduction with improved low frequency characteristics | — | 2013-06-04 |
| 8422712 | Horn-loaded acoustic source with custom amplitude distribution | — | 2013-04-16 |
| 8284976 | Sound reproduction with improved performance characteristics | — | 2012-10-09 |
| 8259981 | Horn-loaded acoustic line source | — | 2012-09-04 |
| D524797 | Loudspeaker | Bradford J. Skuran | 2006-07-11 |
| 6411718 | Sound reproduction employing unity summation aperture loudspeakers | Bradford J. Skuran | 2002-06-25 |
| 5317642 | Loudspeakers having torque drive radiators | Charles A. Rey | 1994-05-31 |
| 5313127 | Moving magnet motor | Charles A. Rey | 1994-05-17 |
| 5257676 | Method and apparatus for stabilizing levitated objects | Dennis R. Merkley, Charles A. Rey | 1993-11-02 |
| 5150272 | Stabilized electromagnetic levitator and method | Charles A. Rey | 1992-09-22 |
| 5140641 | Servo valve loudspeaker | Charles A. Rey | 1992-08-18 |
| 5036944 | Method and apparatus for acoustic levitation | Dennis R. Merkley, Charles A. Rey | 1991-08-06 |
| 4845759 | Sound source having a plurality of drivers operating from a virtual point | — | 1989-07-04 |
| 4841495 | Horn loaded transducer for acoustic levitation | Charles A. Rey | 1989-06-20 |
| 4763358 | Rotary sound transducer | — | 1988-08-09 |
| 4757547 | Air cooled loudspeaker | — | 1988-07-12 |
| 4757227 | Transducer for producing sound of very high intensity | Dennis R. Merkley, Charles A. Rey | 1988-07-12 |
| 4564727 | Subwoofer speaker system | Charles A. Rey | 1986-01-14 |
| 4531025 | Loudspeaker with commutated coil drive | Charles A. Rey | 1985-07-23 |