Inventor
HATTORI YOSHINORI
JP18 patents
⚠️ This page may combine multiple inventors who share the name “HATTORI YOSHINORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NGK SPARK PLUG CO
12 patentsUS4304576ADec 8, 1981
Silicon nitride ceramic tools and a process for their production
NGK SPARK PLUG CO111 citations94
US4689921ASep 1, 1987
Process of contouring the edges of a ceramic rotor
NGK SPARK PLUG CO25 citations86
US4511402AApr 16, 1985
Sintered silicon nitride products and processes for fabrication thereof
NGK SPARK PLUG CO24 citations82
US4248813AFeb 3, 1981
Process for producing high density sintered products
NGK SPARK PLUG CO19 citations81
US4440707AApr 3, 1984
Process for producing silicon nitride sintered products having high toughness
NGK SPARK PLUG CO19 citations80
US4997296AMar 5, 1991
Ceramic bearing and metal shaft assembly
NGK SPARK PLUG CO14 citations73
US4216021AAug 5, 1980
High strength silicon nitride sintered material
NGK SPARK PLUG CO9 citations73
US4499192AFeb 12, 1985
Silicon nitride sintered products having high corrosion resistance and process for production thereof
NGK SPARK PLUG CO7 citations72
US4878812ANov 7, 1989
Turbine rotor
NGK SPARK PLUG CO9 citations70
US5106550AApr 21, 1992
Method of producing ceramic rotor
NGK SPARK PLUG CO11 citations68
US4205033AMay 27, 1980
Process for producing compact silicon nitride ceramics
NGK SPARK PLUG CO7 citations65
US4993174AFeb 19, 1991
Ceramics spike pin
NGK SPARK PLUG CO3 citations60