Inventor
YAMAMOTO SHIGEHIKO
JP14 patents
Patents
14 patentsUS4783613ANov 8, 1988
Impregnated cathode
HITACHI LTD26 citations92
US4518890AMay 21, 1985
Impregnated cathode
HITACHI LTD30 citations92
US4379250AApr 5, 1983
Field emission cathode and method of fabricating the same
HITACHI LTD39 citations91
US4193013AMar 11, 1980
Cathode for an electron source and a method of producing the same
HITACHI LTD19 citations82
US3945698AMar 23, 1976
Method of stabilizing emitted electron beam in field emission electron gun
HITACHI LTD14 citations74
US4855637AAug 8, 1989
Oxidation resistant impregnated cathode
HITACHI LTD17 citations73
US4639377AJan 27, 1987
Thin film formation technique and equipment
HITACHI LTD8 citations73
US4626470ADec 2, 1986
Impregnated cathode
HITACHI LTD14 citations73
US4310777AJan 12, 1982
Directly heated cathode for electron tube
HITACHI LTD14 citations73
US4260665AApr 7, 1981
Electron tube cathode and method for producing the same
HITACHI LTD8 citations73
US4737679AApr 12, 1988
Impregnated cathode
HITACHI LTD11 citations72
US4687930AAug 18, 1987
Ion beam apparatus
HITACHI LTD7 citations72
US4291252ASep 22, 1981
Electron tube cathode
HITACHI LTD9 citations72
US3932314AJan 13, 1976
Hexaboride electron emissive material
HITACHI LTD11 citations70