Inventor
TAJIMA SHUJI
JP7 patents
Patents
7 patentsUS7178381B2Feb 20, 2007
Portable gas detector
RIKEN KEIKI KK22 citations91
US6606897B1Aug 19, 2003
Portable gas detector and its cradle
RIKEN KEIKI KK37 citations88
US6744373B2Jun 1, 2004
Portable gas alarm device
RIKEN KEIKI KK31 citations87
US7086283B2Aug 8, 2006
Explosion-proof portable gas detector
RIKEN KEIKI KK12 citations81
USD447974SSep 18, 2001
Portable gas detector-alarm
RIKEN KEIKI KK16 citations79
US6712586B2Mar 30, 2004
Gas suction pump device, gas feed adapter and gas alarm unit
RIKEN KEIKI KK10 citations68
US7089779B2Aug 15, 2006
Portable gas detector
RIKEN KEIKI KK2 citations61