Inventor

HIRABAYASHI TAKEO

3 patents

Patents

3 patents

US4155762AMay 22, 1979

Liquid developer for binary diazo copying materials

RICOH KK3 citations60

US4119465AOct 10, 1978

Diazo copying material for secondary original

RICOH KK3 citations60

US4416967ANov 22, 1983

Diazo copying element

RICOH KK1 citations45