Inventor
TSUKAMOTO YUUKI
JP3 patents
Patents
3 patentsUS9385510B2Jul 5, 2016
Spark plug for internal combustion engine and method of manufacturing spark plug
DENSO CORP3 citations71
US9825432B2Nov 21, 2017
Spark plug for internal combustion engine and production method thereof
DENSO CORP2 citations70
US9793687B2Oct 17, 2017
Spark plug for internal combustion engine, having an annular ground electrode facing an outer circumference of a center electrode
DENSO CORP0 citations40