Inventor
MIYAZAWA KOKICHI
JP4 patents
Patents
4 patentsUS4414245ANov 8, 1983
Process for producing cobalt containing ferromagnetic iron oxides
ISHIHARA MINING & CHEMICAL CO9 citations70
US4137293AJan 30, 1979
Producing gypsum and magnetite from ferrous sulfate and separating
ISHIHARA MINING & CHEMICAL CO16 citations70
US5143542ASep 1, 1992
Process for producing magnetic metal powder for magnetic recording
ISHIHARA MINING & CHEMICAL CO3 citations60
US4501774AFeb 26, 1985
Process for the production of cobalt-containing magnetic iron oxide powder
ISHIHARA MINING & CHEMICAL CO5 citations60