Inventor
MUSASA MAMORU
JP40 patents
⚠️ This page may combine multiple inventors who share the name “MUSASA MAMORU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
21 patentsUS5607605AMar 4, 1997
Laser welding device, a method of checking welding condition and a method of making a center electrode for a spark plug
NGK SPARK PLUG CO38 citations93
US5448130ASep 5, 1995
Spark plug electrode for use in internal combustion engine
NGK SPARK PLUG CO34 citations93
US6707237B2Mar 16, 2004
Spark plug
NGK SPARK PLUG CO39 citations92
US5320569AJun 14, 1994
Method of making a spark plug
NGK SPARK PLUG CO28 citations92
US8052495B2Nov 8, 2011
Method for producing spark plug by projection welding and spark plug thereof
NGK SPARK PLUG CO8 citations84
US8044562B2Oct 25, 2011
Spark plug
NGK SPARK PLUG CO11 citations84
US7132782B2Nov 7, 2006
Spark plug and method of producing spark plug
NGK SPARK PLUG CO14 citations84
US6724133B2Apr 20, 2004
Spark plug with nickel alloy electrode base material
NGK SPARK PLUG CO18 citations83
US6611084B2Aug 26, 2003
Spark plug
NGK SPARK PLUG CO19 citations83
US7944134B2May 17, 2011
Spark plug with center electrode having high heat dissipation property
NGK SPARK PLUG CO10 citations82
US7045939B2May 16, 2006
Spark plug having a welded electrode and the method of producing the same
NGK SPARK PLUG CO14 citations81
US6653768B2Nov 25, 2003
Spark plug
NGK SPARK PLUG CO9 citations74
US5477104ADec 19, 1995
Spark plug resistant to accidental discharges
NGK SPARK PLUG CO16 citations74
US5370832ADec 6, 1994
Sintered ceramic body for a spark plug insulator and method of sintering the same
NGK SPARK PLUG CO11 citations74
US5760532AJun 2, 1998
Sintered ceramic body for a spark plug
NGK SPARK PLUG CO15 citations70
US5702998ADec 30, 1997
Sintered ceramic body for a spark plug insulator and method of sintering the same
NGK SPARK PLUG CO5 citations63
US5283134AFeb 1, 1994
Spark plug insulator and a method of sintering
NGK SPARK PLUG CO6 citations63
US5198394AMar 30, 1993
Sintered ceramic body, a method of making same and spark plug insulator made therefrom
NGK SPARK PLUG CO5 citations63
US8344604B2Jan 1, 2013
Spark plug for internal combustion engine
NGK SPARK PLUG CO4 citations62
US8033880B2Oct 11, 2011
Method for manufacturing spark plug
NGK SPARK PLUG CO2 citations62
US8365694B2Feb 5, 2013
Easily removable spark plug
NGK SPARK PLUG CO1 citations52
SUZUKI AKIRA
7 patentsUS8395307B2Mar 12, 2013
Spark plug for preventing accumulation of carbon on an insulator
SUZUKI AKIRA3 citations63
US8299694B2Oct 30, 2012
Spark plug having improved adhesion between resistor and glass sealing layer
SUZUKI AKIRA2 citations63
US8207657B2Jun 26, 2012
Spark plug and method of manufacturing the same
SUZUKI AKIRA3 citations63
US8143773B2Mar 27, 2012
Spark plug
SUZUKI AKIRA2 citations63
US8736154B2May 27, 2014
Spark plug
SUZUKI AKIRA0 citations42
US8531094B2Sep 10, 2013
Spark plug having self-cleaning of carbon deposits
SUZUKI AKIRA0 citations41
US8519606B2Aug 27, 2013
Spark plug for internal combustion engine and method of manufacturing spark plug
SUZUKI AKIRA0 citations41
MIYASHITA NAOMICHI
3 patentsTORII KAZUYOSHI
3 patentsUS8410673B2Apr 2, 2013
Spark plug having a ground electrode of specific alloy composition to which a noble metal tip is joined
TORII KAZUYOSHI2 citations61
US8294344B2Oct 23, 2012
Spark plug and weld metal zone
TORII KAZUYOSHI2 citations60
US8638029B2Jan 28, 2014
Spark plug for internal combustion engine and method of manufacturing the spark plug
TORII KAZUYOSHI0 citations40