Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6154639 | Handsfree unit | Osamu Kurokawa, Akira Ishikura, Yoshihiro Nomura, Masakuni Hyodo, Ken Nakamura | 2000-11-28 |
| 5398281 | Telephone with hands-free operation | Osamu Kurokawa, Buntaro Sawa | 1995-03-14 |