Inventor
ICHIKAWA NOBUYUKI
JP4 patents
Patents
4 patentsUS5694208ADec 2, 1997
Sensor for detecting fine particles such as smoke or dust contained in the air
NOHMI BOSAI LTD29 citations88
US6195003B1Feb 27, 2001
Fire alarming system
NOHMI BOSAI LTD11 citations70
US5929988AJul 27, 1999
Particulate detecting sensor employing parallel light
NOHMI BOSAI LTD12 citations69
US6091328AJul 18, 2000
Fire alarming system
NOHMI BOSAI LTD5 citations59