Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5485523 | Active noise reduction system for automobile compartment | Manpei Tamamura, Hiroshi Iidaka, Kazuyuki Kondo | 1996-01-16 |
| 5426705 | Vehicle internal noise reduction system | Manpei Tamamura, Kazuyuki Kondo, Hiroshi Iitaka | 1995-06-20 |
| 5408532 | Vehicle internal noise reduction system | Manpei Tamamura, Eiji Shibata, Hiroshi Iitaka | 1995-04-18 |