Inventor

MIZUTANI HIRONOBU

JP4 patents

Patents

4 patents

US9236716B2Jan 12, 2016

Spark plug

NGK SPARK PLUG CO4 citations69

US7663296B2Feb 16, 2010

Spark plug for internal combustion engine

NGK SPARK PLUG CO4 citations59

US10063037B2Aug 28, 2018

Spark plug

NGK SPARK PLUG CO0 citations37

US10153620B2Dec 11, 2018

Spark plug

NGK SPARK PLUG CO0 citations29