Inventor

TSUBOTA KENKA

JP4 patents

⚠️ This page may combine multiple inventors who share the name “TSUBOTA KENKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KANAO KEIJI

2 patents

US8258686B2Sep 4, 2012

Spark plug for internal combustion engine

KANAO KEIJI2 citations57

US8523624B2Sep 3, 2013

Spark plug for internal combustion engine and manufacturing method thereof

KANAO KEIJI0 citations47

HANASHI KEN

2 patents

US8398447B2Mar 19, 2013

Method for manufacturing spark plug for internal-combustion engine

HANASHI KEN0 citations42

US8339021B2Dec 25, 2012

Spark plug for internal-combustion engine and method for manufacturing the same

HANASHI KEN0 citations42