Inventor
NINOMIYA KATSUNARI
JP5 patents
Patents
5 patentsUS6236148B1May 22, 2001
Spark plug with specific metal shell coating
NGK SPARK PLUG CO18 citations91
US7122947B2Oct 17, 2006
Glow plug and spark plug, and manufacturing method therefor
NGK SPARK PLUG CO7 citations72
US6437493B2Aug 20, 2002
Glow plug and spark plug, and manufacturing method therefor
NGK SPARK PLUG CO5 citations72
US6699089B2Mar 2, 2004
Sheathed glow plug and method of manufacturing the same
NGK SPARK PLUG CO2 citations59
US6791245B2Sep 14, 2004
Glow plug and spark plug, and manufacturing method therefor
NGK SPARK PLUG CO0 citations51