Inventor
HARADA TOSIHARU
JP14 patents
Patents
14 patentsUS5314750AMay 24, 1994
Magnetic iron oxide particles and method of producing same
TODA KOGYO CORP20 citations91
US4136158AJan 23, 1979
Production of acicular magnetic iron oxides
TODA KOGYO CORP21 citations81
US5599378AFeb 4, 1997
Spindle-shaped magnetic iron based alloy particles and process for producing the same
TODA KOGYO CORP6 citations72
US5466306ANov 14, 1995
Spindle-shaped magnetic iron based alloy particles
TODA KOGYO CORP11 citations72
US4514216AApr 30, 1985
Acicular ferromagnetic alloy particles for magnetic recording and process for producing the same
TODA KOGYO CORP12 citations72
US4406694ASep 27, 1983
Process for producing acicular ferromagnetic alloy particles and acicular ferromagnetic alloy particles obtained by the said process
TODA KOGYO CORP16 citations72
US5399278AMar 21, 1995
Process for producing acicular goethite particles and acicular magnetic iron oxide particles
TODA KOGYO CORP10 citations71
US4873010AOct 10, 1989
Spindle-like magnetic iron oxide particles and process for producing the same
TODA KOGYO CORP15 citations71
US4495164AJan 22, 1985
Process for producing acicular magnetite or acicular maghemite
TODA KOGYO CORP11 citations71
US5582914ADec 10, 1996
Magnetic iron oxide particles and method of producing the same
TODA KOGYO CORP2 citations61
US4437881AMar 20, 1984
Acicular ferromagnetic alloy particles and process for producing said particles
TODA KOGYO CORP5 citations61
US5480571AJan 2, 1996
Process for producing acicular goethite particles and acicular magnetic iron oxide particles
TODA KOGYO CORP3 citations60
US5378380AJan 3, 1995
Process for producing acicular geothite particles and acicular magnetic iron oxide particles
TODA KOGYO CORP2 citations60
US6153296ANov 28, 2000
Acicular hematite particles and magnetic recording medium
TODA KOGYO CORP1 citations52