Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5914525 | Semiconductor device | Minoru Yoshida | 1999-06-22 |
| 4549818 | Temperature detector | Toyoharu Fujikawa, Tsutomu Tanaka | 1985-10-29 |
| 4430008 | Quartz oscillation-type electronic timepiece | — | 1984-02-07 |
| 4388001 | Electronic timepiece | — | 1983-06-14 |
| 4333171 | Electronic timepiece with diffusion resistor for compensating threshold variations | — | 1982-06-01 |
| 4326277 | Electronic timepiece | — | 1982-04-20 |
| 4320479 | Analogue electronic timepiece with an alarm device | Mitsuo Sekine | 1982-03-16 |
| 4296490 | Crystal oscillation-type electronic timepiece | — | 1981-10-20 |
| 4293939 | Electronic timepiece having an alarm system | Mitsuo Sekine | 1981-10-06 |
| 4280210 | Electronic alarm timepiece | Mitsuo Sekine | 1981-07-21 |