Inventor

OSETO SEIICHI

JP3 patents

Patents

3 patents

US5142192AAug 25, 1992

Thin film electroluminescent element

RICOH KK28 citations91

US4914348AApr 3, 1990

Electroluminescence multi-color display device

RICOH KK25 citations91

US4591262AMay 27, 1986

Electrostatic copying apparatus

RICOH KK6 citations61