Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7102963 | Radio-wave clock | Yoshifumi Maehara | 2006-09-05 |
| 6804172 | Analog electronic timepiece including plural indicator wheels | Koichiro Jujo | 2004-10-12 |
| 6688765 | Clutch wheel for a timepiece | — | 2004-02-10 |
| 6407965 | Timepiece having thermoelectric generator unit | Susumu Kotanagi, Yoshifumi Yoshida, Fumiyasu Utsunomiya, Matsuo Kishi | 2002-06-18 |
| 6359841 | Timepiece and portable electronic device having thermoelectric generator unit | Susumu Kotanagi, Yoshifumi Yoshida, Fumiyasu Utsunomiya, Matsuo Kishi | 2002-03-19 |
| 6316714 | Power generating block provided with thermoelectric generation unit | Susumu Kotanagi, Yoshifumi Yoshida, Fumiyasu Utsunomiya, Matsuo Kishi | 2001-11-13 |