Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5457664 | Energy saving timepiece | Yukari Hoshino, Takumi Matsuda | 1995-10-10 |
| 5359577 | Alarm clock having an ambient light detector | Yukari Hoshino, Hirobumi Okuyama | 1994-10-25 |