Inventor
MITSUMATSU SHINICHIRO
JP5 patents
Patents
5 patentsUS7483562B2Jan 27, 2009
Method of detecting protrudent adhered matters and method of making spark plug using the same
NGK SPARK PLUG CO4 citations60
US7112112B2Sep 26, 2006
Method and apparatus for making a spark plug with a predetermined spark gap
NGK SPARK PLUG CO2 citations60
US6695663B2Feb 24, 2004
Method for manufacturing spark plug and apparatus for carrying out the same
NGK SPARK PLUG CO4 citations60
US6592418B2Jul 15, 2003
Method for manufacturing spark plug and apparatus for carrying out the same
NGK SPARK PLUG CO6 citations60
US7581998B2Sep 1, 2009
Method for regulating aground electrode position in spark plug
NGK SPARK PLUG CO4 citations58