Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4598590 | Electret transducer for blood pressure measurement | Ilene J. Busch-Vishniac, Robert A. Kubli | 1986-07-08 |
| 4524247 | Integrated electroacoustic transducer with built-in bias | W. Stewart Lindenberger, Tommy L. Poteat | 1985-06-18 |
| 4434327 | Electret transducer with variable actual air gap | Ilene J. Busch-Vishniac, Robert Lee Wallace | 1984-02-28 |
| 4429193 | Electret transducer with variable effective air gap | Ilene J. Busch-Vishniac, Robert Lee Wallace | 1984-01-31 |
| 4429192 | Electret transducer with variable electret foil thickness | Ilene J. Busch-Vishniac, Robert Lee Wallace | 1984-01-31 |
| 4429189 | Electret transducer with a selectively metalized backplate | David Arthur Berkley, Ilene J. Busch-Vishniac, Robert Lee Wallace | 1984-01-31 |
| 4429191 | Electret transducer with variably charged electret foil | Ilene J. Busch-Vishniac, Robert Lee Wallace | 1984-01-31 |
| 4248808 | Technique for removing surface and volume charges from thin high polymer films | — | 1981-02-03 |