Inventor
TAKAGI SHUNICHI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “TAKAGI SHUNICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
14 patentsUS4427915AJan 24, 1984
Spark plug and the process for production thereof
NGK SPARK PLUG CO52 citations96
US4400643AAug 23, 1983
Wide thermal range spark plug
NGK SPARK PLUG CO56 citations96
US4261085AApr 14, 1981
Method of making an ignition plug insulator having an electrically conductive end
NGK SPARK PLUG CO34 citations92
US4414483ANov 8, 1983
Spark plug and manufacturing process thereof
NGK SPARK PLUG CO27 citations82
US4173731ANov 6, 1979
Resistor composition for spark plug having a resistor enclosed therein
NGK SPARK PLUG CO24 citations82
US4224554ASep 23, 1980
Spark plug having a low noise level
NGK SPARK PLUG CO26 citations81
US4582813AApr 15, 1986
Sintered alumina product
NGK SPARK PLUG CO16 citations74
US4723863AFeb 9, 1988
Method and means for joining a ceramic shaft and metal sleeve
NGK SPARK PLUG CO11 citations73
US4657825AApr 14, 1987
Electronic component using a silicon carbide substrate and a method of making it
NGK SPARK PLUG CO17 citations73
US4442375AApr 10, 1984
Electrical self-purification ignition plug
NGK SPARK PLUG CO7 citations73
US4393324AJul 12, 1983
Spark plug with a sphere-like metal center electrode and manufacturing process thereof
NGK SPARK PLUG CO7 citations73
US4144474AMar 13, 1979
Low noise resistance containing spark plug
NGK SPARK PLUG CO20 citations73
US4427914AJan 24, 1984
Sparkplug with improved antifouling performance
NGK SPARK PLUG CO9 citations71
US4415828ANov 15, 1983
Sparkplug with antifouling coating on discharge end of insulator
NGK SPARK PLUG CO13 citations68