Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4586032 | Warning system for dozing at wheel | Yasutoshi Seko, Takayuki Yanagishima | 1986-04-29 |
| 4450438 | Drowsiness alarm system for a vehicle | Yasutoshi Seko, Takayuki Yanagishima | 1984-05-22 |
| 4252078 | Meter having illuminated pointer | Masao Ishikawa | 1981-02-24 |
| 4218726 | Indicator gauge with illuminated pointer | Masao Ishikawa | 1980-08-19 |
| 4215647 | Indicator gauge with illuminated pointer | — | 1980-08-05 |
| 4207856 | I.C. Engine operable in party-cylinder mode | Fukashi Sugasawa, Haruhiko Iizuka, Akitoshi Mumura | 1980-06-17 |