ST

Shuji Tajima

RC Riken Keiki Co.: 7 patents #1 of 35Top 3%
Overall (All Time): #753,693 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
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