Inventor
NISHIWAKI YOSHIKAZU
JP12 patents
Patents
12 patentsUS4673241AJun 16, 1987
Diffraction gratings and optical branching filter elements
SUMITOMO ELECTRIC INDUSTRIES68 citations95
US4560249ADec 24, 1985
Method of forming diffraction gratings and optical branching filter elements produced thereby
SUMITOMO ELECTRIC INDUSTRIES114 citations95
US5106584AApr 21, 1992
Cell selecting apparatus
SUMITOMO ELECTRIC INDUSTRIES63 citations94
US4517280AMay 14, 1985
Process for fabricating integrated optics
SUMITOMO ELECTRIC INDUSTRIES34 citations92
US4547072AOct 15, 1985
Optical fiber gyro
SUMITOMO ELECTRIC INDUSTRIES33 citations90
US4569588AFeb 11, 1986
Light frequency change detecting method and apparatus
SUMITOMO ELECTRIC INDUSTRIES23 citations81
US4444462AApr 24, 1984
Picture image observation system
SUMITOMO ELECTRIC INDUSTRIES25 citations81
US4685763AAug 11, 1987
Light modulation device
SUMITOMO ELECTRIC INDUSTRIES23 citations80
US4729618AMar 8, 1988
Integrated optic circuit
SUMITOMO ELECTRIC INDUSTRIES21 citations79
US4616258AOct 7, 1986
Device for monitoring the interior of a conduit
SUMITOMO ELECTRIC INDUSTRIES15 citations73
US4508420AApr 2, 1985
Optical system
SUMITOMO ELECTRIC INDUSTRIES7 citations73
US4641913AFeb 10, 1987
Optical integrated circuit utilizing the piezoelectric and photoconductive properties of a substrate
SUMITOMO ELECTRIC INDUSTRIES3 citations62