Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7178381 | Portable gas detector | Yasunori Takei | 2007-02-20 |
| 7089779 | Portable gas detector | Yasunori Takei | 2006-08-15 |
| 7086283 | Explosion-proof portable gas detector | Junichi Koyano | 2006-08-08 |
| 6744373 | Portable gas alarm device | Junichi Koyano, Yoshiharu Ao, Masahide Kitamura | 2004-06-01 |
| 6712586 | Gas suction pump device, gas feed adapter and gas alarm unit | Junichi Koyano, Yasunori Takei, Takuo Aida | 2004-03-30 |
| 6606897 | Portable gas detector and its cradle | Juniti Koyano, Masahide Kitamura | 2003-08-19 |
| D447974 | Portable gas detector-alarm | Juniti Koyano, Masahide Kitamura | 2001-09-18 |