Inventor
YOSHIDA MITSUTAKA
JP21 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIDA MITSUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
10 patentsUS5829587ANov 3, 1998
Package box for a spark plug
NGK SPARK PLUG CO33 citations91
US5109178AApr 28, 1992
Spark plug for internal combustion engine
NGK SPARK PLUG CO23 citations90
US5239225AAug 24, 1993
Spark plug for use in internal combustion engine
NGK SPARK PLUG CO27 citations88
US4006106AFeb 1, 1977
Self sealable glassy resistor composition for a resistor sealed spark plug
NGK SPARK PLUG CO20 citations82
US4224554ASep 23, 1980
Spark plug having a low noise level
NGK SPARK PLUG CO26 citations81
US5962957AOct 5, 1999
Spark plug for internal combustion engine
NGK SPARK PLUG CO10 citations73
US5760533AJun 2, 1998
Spark plug for an internal combustion engine
NGK SPARK PLUG CO16 citations72
US4814665AMar 21, 1989
Center electrode structure for spark plug
NGK SPARK PLUG CO15 citations72
US4808135AFeb 28, 1989
Center electrode structure for spark plug
NGK SPARK PLUG CO9 citations72
US4191155AMar 4, 1980
Internal combustion engine ignition noise preventing device
NGK SPARK PLUG CO7 citations69
CHUGAI PHARMACEUTICAL CO LTD
5 patentsUS5574178ANov 12, 1996
4,6-Di-t-butyl-dihydrobenzofuran-5-ol and its derivatives
CHUGAI PHARMACEUTICAL CO LTD14 citations81
US5019574AMay 28, 1991
3,4-diaminoquinoline and 3,4-diamino-5,6,7,8-tetrahydroquinoline compounds useful for improving psychoneural function
CHUGAI PHARMACEUTICAL CO LTD11 citations72
US5219861AJun 15, 1993
6 β-Thiomorphine derivatives
CHUGAI PHARMACEUTICAL CO LTD16 citations65
US5663373ASep 2, 1997
4-alkoxy-2, 6-di-t-butylphenol derivatives
CHUGAI PHARMACEUTICAL CO LTD3 citations62
US5606089AFeb 25, 1997
4-alkoxy-2, 6-di-t-butylphenol derivatives
CHUGAI PHARMACEUTICAL CO LTD3 citations62