Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5025429 | Electric power supply device for hand with load | — | 1991-06-18 |
| 4995016 | Timepiece with light emitting device | — | 1991-02-19 |
| 4995022 | Power supply device for hand with luminescence element | Hidetsugu Ikeda, Shoichiro Kumazawa, Satoru Yamauchi, Kouichi Miyagi | 1991-02-19 |
| 4993005 | Power supply system for luminous hands | — | 1991-02-12 |
| 4855637 | Oxidation resistant impregnated cathode | Shigehiko Yamamoto, Sadanori Taguchi, Susumu Sasaki | 1989-08-08 |
| 4796239 | Circuit unit for timepiece and process for fabricating the same | Tsuyoshi Hayakawa, Satoru Yamauchi, Isao Kondo | 1989-01-03 |
| 4783613 | Impregnated cathode | Shigehiko Yamamoto, Sadanori Taguchi, Susumu Sasaki | 1988-11-08 |
| 4745682 | Method of connecting coil | Tsuyoshi Hayakawa, Satoru Yamauchi, Isao Kondo, Junichi Aizawa | 1988-05-24 |
| 4737679 | Impregnated cathode | Shigehiko Yamamoto, Sadanori Taguchi, Toshiyuki Aida, Susumu Kawase | 1988-04-12 |