Assignee
NAKAMURA MAI
JP4 patents
Top patents by PatentIndex Score
US8294347B2Oct 23, 2012
Spark plug having specific configuration of packing area
NAKAMURA MAI5 citations59
US8536771B2Sep 17, 2013
Surface for supporting a sheet packing in a spark plug
NAKAMURA MAI0 citations49
US8674592B2Mar 18, 2014
Spark plug having a crimp portion in the metal shell to firmly engage with the ceramic insulator
NAKAMURA MAI0 citations39
US8492964B2Jul 23, 2013
Spark plug and manufacturing method thereof
NAKAMURA MAI0 citations38