Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7065219 | Acoustic apparatus and headphone | Kensaku Abe, Kazuhisa Kito, Keiko Yabuki | 2006-06-20 |
| 5987147 | Sound collector | — | 1999-11-16 |
| 5402497 | Headphone apparatus for reducing circumference noise | Kensaku Abe, Eiji Sato, Nobuo Kobayashi | 1995-03-28 |