Inventor
YOSHIDA KAZUMASA
JP27 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIDA KAZUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
10 patentsUS6208066B1Mar 27, 2001
Semi-creeping discharge type spark plug
NGK SPARK PLUG CO22 citations92
US6091185AJul 18, 2000
Lateral electrode type spark plug with geometrical relationships with ground electrode
NGK SPARK PLUG CO33 citations92
US5929556AJul 27, 1999
Spark plug with center electrode having variable diameter portion retracted from front end on insulator
NGK SPARK PLUG CO42 citations92
US6095124AAug 1, 2000
Spark plug and an internal combustion engine igniting system using the same
NGK SPARK PLUG CO44 citations90
US6225752B1May 1, 2001
Spark plug for internal combustion engine
NGK SPARK PLUG CO19 citations84
US6617706B2Sep 9, 2003
Ignition system
NGK SPARK PLUG CO13 citations83
US6244247B1Jun 12, 2001
Ignition device for internal combustion engines
NGK SPARK PLUG CO8 citations69
US7714489B2May 11, 2010
Spark plug including ground electrode with arcuately curved face
NGK SPARK PLUG CO2 citations63
US7839064B2Nov 23, 2010
Spark plug for internal combustion engine
NGK SPARK PLUG CO1 citations52
US7821186B2Oct 26, 2010
Spark plug having specific configuration of center electrode with respect to outer electrode
NGK SPARK PLUG CO1 citations52
NORITAKE CO LTD
4 patentsUS6827641B2Dec 7, 2004
Grinding wheel having synthetic resin layers covering axially opposite end faces of body of the wheel
NORITAKE CO LTD7 citations74
US6641473B2Nov 4, 2003
Grinding wheel with abrasive segment chips including at least two abrasive segment chips whose circumferential lengths are different from each other
NORITAKE CO LTD5 citations59
US6589304B1Jul 8, 2003
Method of bonding porous abrasive solid mass to base member with provision of sealing film on bonding surface of the abrasive solid mass
NORITAKE CO LTD3 citations59
US6846340B2Jan 25, 2005
Method of manufacturing segment-chip-type grinding wheel having large axial length
NORITAKE CO LTD3 citations54