Issued Patents All Time
Showing 76–100 of 104 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6199655 | Holographic transparent speaker | — | 2001-03-13 |
| 6201874 | Electrostatic transducer with nonplanar configured diaphragm | James J. Croft, III | 2001-03-13 |
| 6188772 | Electrostatic speaker with foam stator | James J. Croft, III | 2001-02-13 |
| 6175636 | Electrostatic speaker with moveable diaphragm edges | James J. Croft, III | 2001-01-16 |
| 6151398 | Magnetic film ultrasonic emitter | — | 2000-11-21 |
| 6108433 | Method and apparatus for a magnetically induced speaker diaphragm | — | 2000-08-22 |
| 6108427 | Method and apparatus for eliminating audio feedback | Jeevan G. Bank | 2000-08-22 |
| 6044160 | Resonant tuned, ultrasonic electrostatic emitter | — | 2000-03-28 |
| 5990837 | Rugged gas tube RF cellular antenna | David W. O'Bryant | 1999-11-23 |
| 5966452 | Sound reduction method and system for jet engines | — | 1999-10-12 |
| 5952959 | GPS relative position detection system | — | 1999-09-14 |
| 5935171 | Apparatus for, and method of, detecting dislocations and material wear in hip replacements | John Schneider, Richard H. Walker | 1999-08-10 |
| 5889870 | Acoustic heterodyne device and method | — | 1999-03-30 |
| 5885129 | Directable sound and light toy | — | 1999-03-23 |
| 5859915 | Lighted enhanced bullhorn | — | 1999-01-12 |
| 5812659 | Ear microphone with enhanced sensitivity | Daniel W. Mauney, Charles L. McClendon | 1998-09-22 |
| 5781150 | GPS relative position detection system | — | 1998-07-14 |
| 5689269 | GPS relative position detection system | — | 1997-11-18 |
| 5594456 | Gas tube RF antenna | David W. O'Bryant | 1997-01-14 |
| 5491774 | Handheld record and playback device with flash memory | Norbert P. Daberko, Steven T. Brightbill | 1996-02-13 |
| 5373555 | Unidirectional ear microphone and gasket | Charles L. McClendon | 1994-12-13 |
| 5363444 | Unidirectional ear microphone and method | — | 1994-11-08 |
| 5313663 | Ear mounted RF receiver | — | 1994-05-17 |
| 5280524 | Bone conductive ear microphone and method | — | 1994-01-18 |
| 4930156 | Telephone receiver transmitter device | — | 1990-05-29 |