Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6099761 | Process for producing solar-cell watch dial | Akio Aoki, Toshio Murata, Ikuo Kobayashi, Takao Saito | 2000-08-08 |
| 6021099 | Solar-cell watch dial and process for producing the same | Akio Aoki, Toshio Murata, Ikuo Kobayashi, Takao Saito | 2000-02-01 |
| 5912064 | Dial plate for solar battery powered watch | Hisato Hiraishi, Takashi Toida | 1999-06-15 |
| 5761158 | Solar battery powered watch | Hisato Hiraishi, Takashi Toida | 1998-06-02 |
| 5562414 | Noise reduction device for rotorcraft | — | 1996-10-08 |
| 4901528 | System for suppressing noise due to exhaust gas from motor vehicle | Fumitaka Saigo, Ryoichi Nakagawa | 1990-02-20 |