Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8085959 | Hearing compensation system incorporating signal processing techniques | Richard W. Christiansen | 2011-12-27 |
| 6885752 | Hearing aid device incorporating signal processing techniques | Richard W. Christiansen, Aaron Hammond, William C Borough | 2005-04-26 |
| 6574342 | Hearing aid fitting system | Keith L. Davis, Xiaoling Fang, Darrell Rose | 2003-06-03 |
| 6201875 | Hearing aid fitting system | Keith L. Davis, Xiaoling Fang, Darrell Rose | 2001-03-13 |
| 6072885 | Hearing aid device incorporating signal processing techniques | Thomas G. Stockham, Jr., Carver A. Mead | 2000-06-06 |
| 6044162 | Digital hearing aid using differential signal representations | Carver A. Mead, Keith L. Davis | 2000-03-28 |
| 5848171 | Hearing aid device incorporating signal processing techniques | Thomas G. Stockham, Jr. | 1998-12-08 |
| 5500902 | Hearing aid device incorporating signal processing techniques | Thomas G. Stockham, Jr. | 1996-03-19 |
| 5250949 | System and method for data compression using multiple codewords and transmitted indices | Richard L. Frost, Christopher Barnes, Richard W. Christiansen | 1993-10-05 |
| 5029217 | Digital hearing enhancement apparatus | Robert Brey, Martin Robinette, Richard W. Christiansen, Gary Robert Kenworthy | 1991-07-02 |
| 4977604 | Method and apparatus for processing sampled data signals by utilizing preconvolved quantized vectors | Richard W. Christiansen | 1990-12-11 |
| 4872012 | Data compression method and apparatus for radar image formation and like data processing operations | — | 1989-10-03 |
| 4658426 | Adaptive noise suppressor | Richard W. Christiansen, Douglas C. Lynn, Gary Robert Kenworthy | 1987-04-14 |
| 4243935 | Adaptive detector | John M. McCool, Bernard Widrow, Robert H. Hearn, James R. Zeidler, Randall H. Moore | 1981-01-06 |
| 4238746 | Adaptive line enhancer | John M. McCool, Bernard Widrow, James R. Zeidler, Robert H. Hearn | 1980-12-09 |