Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7436737 | Electric timepiece | Masami Fukuda, Kiyotaka Igarashi, Shinichi Komine, Shigeru Morokawa | 2008-10-14 |
| 6894952 | Timer of electric timepiece | Shigeru Morokawa, Takaaki Nozaki, Takakazu Yano, Masami Fukuda, Kazuo Sakamoto | 2005-05-17 |
| 6853219 | Charging circuit | Katsuyoshi Aihara, Takaaki Nozaki | 2005-02-08 |
| 6727769 | Crystal oscillator circuit using CMOSFETs | Katsuyoshi Aihara, Takakazu Yano, Yukio Otaka, Shinichi Komine | 2004-04-27 |
| 4433920 | Electronic timepiece having improved primary frequency divider response characteristics | Fukuo Sekiya, Shigeru Morokawa | 1984-02-28 |
| 4370067 | Electronic timepiece with gain/loss adjustment | Tatsuo Nitta, Kazutoshi Takahashi | 1983-01-25 |
| 4346350 | FET Quartz oscillators | Shigeru Morokawa | 1982-08-24 |