Inventor
SUMITA HIROSHI
JP10 patents
Patents
10 patentsUS5449565ASep 12, 1995
Magnetic iron oxide particles, a process for producing the same and a magnetic recording medium
TODA KOGYO CORP23 citations92
US6616747B2Sep 9, 2003
Process for producing granular hematite particles
TODA KOGYO CORP24 citations91
US4136158AJan 23, 1979
Production of acicular magnetic iron oxides
TODA KOGYO CORP21 citations81
US6087004AJul 11, 2000
Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom
TODA KOGYO CORP7 citations74
US6139618AOct 31, 2000
Fine yellow composite iron oxide hydroxide pigment, and paint or resin composition using the same
TODA KOGYO CORP12 citations73
US6027559AFeb 22, 2000
Yellow iron oxide hydroxide particles and process for producing the same
TODA KOGYO CORP7 citations73
US4136049AJan 23, 1979
Process for treating acicular magnetite containing co to stabilize the magnetic properties thereof
TODA KOGYO CORP16 citations72
US4873010AOct 10, 1989
Spindle-like magnetic iron oxide particles and process for producing the same
TODA KOGYO CORP15 citations71
US4773931ASep 27, 1988
Spindle ferromagnetic alloy particles
TODA KOGYO CORP12 citations70
US6117540ASep 12, 2000
Non-magnetic black particles, non-magnetic black pigment therefrom and non-magnetic black filler therefrom
TODA KOGYO CORP4 citations63