Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4668100 | Electronic equipment with geomagnetic direction sensor | Hiroyuki Kihara, Kazuya Mitaki | 1987-05-26 |
| 4525074 | Apparatus for measuring the quantity of physical exercise | — | 1985-06-25 |
| 4472066 | Digital electronic timepiece | — | 1984-09-18 |
| 4227777 | Liquid crystal display cell | — | 1980-10-14 |
| 4202166 | Solid state watch module construction | Katsuhiko Komiyama, Noriyuki Kasama, Keiji Tsukamoto | 1980-05-13 |