Inventor
HAYAKAWA ISSEI
JP8 patents
Patents
8 patentsUS5015608AMay 14, 1991
High hardness silicon nitride sintered bodies
NGK INSULATORS LTD25 citations92
US4273587AJun 16, 1981
Polycrystalline transparent spinel sintered body and a method for producing the same
NGK INSULATORS LTD40 citations92
US5002907AMar 26, 1991
Homogenous silicon nitride sintered body
NGK INSULATORS LTD21 citations81
US4810681AMar 7, 1989
Method of manufacturing dense cordierite
NGK INSULATORS LTD23 citations80
US5017531AMay 21, 1991
Silicon nitride ceramic sintered bodies
NGK INSULATORS LTD20 citations78
US4820665AApr 11, 1989
Ceramic sintered bodies and a process for manufacturing the same
NGK INSULATORS LTD19 citations78
US4742759AMay 10, 1988
Ceramic insert cast piston
NGK INSULATORS LTD10 citations72
US4871697AOct 3, 1989
Method of producing homogeneous silicon nitride sintered bodies
NGK INSULATORS LTD1 citations48