Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7061977 | Apparatus and method for using adaptive algorithms to exploit sparsity in target weight vectors in an adaptive channel equalizer | Richard K. Martin, William A. Sethares | 2006-06-13 | $1,396,000 |
| 6760455 | Electrostatic loudspeaker with a distributed filter | James J. Croft, III | 2004-07-06 | $1,445,000 |
| 5748759 | Loud speaker structure | James J. Croft, III | 1998-05-05 | |
| 5606289 | Audio frequency power amplifiers with actively damped filter | — | 1997-02-25 | |
| 5543753 | Audio frequency power amplifiers with actively damped filter | — | 1996-08-06 | |
| 5396194 | Audio frequency power amplifiers | James J. Croft, III | 1995-03-07 |