Inventor
MACHIDA HAZIME
10 patents
Patents
10 patentsUS4562105ADec 31, 1985
Ferrimagnetic oxides and magneto-optical recording medium employing the same
RICOH KK20 citations81
US4208212AJun 17, 1980
Aqueous treating liquid for use in offset printing
RICOH KK19 citations80
US4670322AJun 2, 1987
Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
RICOH KK11 citations73
US4670323AJun 2, 1987
Magneto-optic recording medium having a metal oxide recording layer
RICOH KK12 citations73
US4544602AOct 1, 1985
Magneto-optical recording medium having a ferrimagnetic recording layer
RICOH KK17 citations73
US4413297ANov 1, 1983
Magnetic recording and playback apparatus of perpendicular recording type
RICOH KK15 citations73
US4788095ANov 29, 1988
Metal oxide magnetic substance and a magnetic film consisting thereof and their uses
RICOH KK8 citations69
US4116698ASep 26, 1978
Ferrocyanate treating liquid for offset master
RICOH KK4 citations62
US4282811AAug 11, 1981
Method for desensitizing offset printing plates
RICOH KK4 citations60
US3933667AJan 20, 1976
Double dispersion acrylate or methacrylate wet developer
RICOH KK5 citations59