Inventor

KOUGE YOSHIHIDE

JP3 patents

Patents

3 patents

US6771009B2Aug 3, 2004

Spark plug

NGK SPARK PLUG CO27 citations91

US6744188B2Jun 1, 2004

Spark plug

NGK SPARK PLUG CO8 citations71

US6590317B2Jul 8, 2003

Spark plug

NGK SPARK PLUG CO4 citations61