Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10212525 | Universal earpiece | Johan D. Carlson, Randall W. Roberts, Margaret V. Nilson | 2019-02-19 |
| 9398362 | Universal earpiece | Johan D. Carlson, Randall W. Roberts, Margaret V. Nilson | 2016-07-19 |
| 8923539 | Integrated automatic telephone switch | Mark A. Bren, Randall W. Roberts, Timothy S. Peterson | 2014-12-30 |
| D698445 | Earpiece | Randall W. Roberts, D. Johan Carlson, Margaret V. Nilson | 2014-01-28 |
| 8259973 | Integrated automatic telephone switch | Mark A. Bren, Randall W. Roberts, Timothy S. Peterson | 2012-09-04 |
| 7929723 | Portable system for programming hearing aids | David A. Preves, James R. Newton, Garry Richardson | 2011-04-19 |
| 7822217 | Hearing assistance systems for providing second-order gradient directional signals | Mark A. Bren, Randall W. Roberts, Timothy S. Peterson, David A. Preves | 2010-10-26 |
| 7787647 | Portable system for programming hearing aids | David A. Preves, James R. Newton, Garry Richardson | 2010-08-31 |
| 7451256 | Portable system for programming hearing aids | David A. Preves | 2008-11-11 |
| 7369669 | Diotic presentation of second-order gradient directional hearing aid signals | Mark A. Bren, Randall W. Roberts, Timothy S. Peterson, David A. Preves | 2008-05-06 |
| 7248713 | Integrated automatic telephone switch | Mark A. Bren, Randall W. Roberts, Timothy S. Peterson | 2007-07-24 |
| 6888948 | Portable system programming hearing aids | David A. Preves | 2005-05-03 |
| 6442279 | Acoustic conditioner | David A. Preves, Robert L. Millier, Ning Shen | 2002-08-27 |
| 6424722 | Portable system for programming hearing aids | David A. Preves | 2002-07-23 |
| 6389142 | In-the-ear hearing aid with directional microphone system | David A. Preves | 2002-05-14 |
| 6359992 | Acoustics conditioner | David A. Preves, Robert L. Millier, Ning Shen | 2002-03-19 |