Inventor

YAMADA EIZABURO

JP3 patents

Patents

3 patents

US5001536AMar 19, 1991

Semiconductor device

HITACHI LTD60 citations94

US4933728AJun 12, 1990

Semiconductor optical device

HITACHI LTD13 citations72

US4847573AJul 11, 1989

Optical modulator

HITACHI LTD13 citations72