Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668747 | Coefficient updating method for an adaptive filter | — | 1997-09-16 |
| 5636286 | Active noise reduction device for electronic apparatus | Eiji Makabe, Tsutomu Hoshino, Atsushi Yamaguchi | 1997-06-03 |
| 5602926 | Method and apparatus of determining the sound transfer characteristic of an active noise control system | Kensaku Fujii, Juro Ohga | 1997-02-11 |