Inventor
MISAWA HIROMITSU
JP24 patents
⚠️ This page may combine multiple inventors who share the name “MISAWA HIROMITSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TODA KOGYO CORP
20 patentsUS5874019AFeb 23, 1999
Magnetic particles for magnetic toner and process for producing the same
TODA KOGYO CORP23 citations92
US5843610ADec 1, 1998
Magnetic particles for magentic toner and process for producing the same
TODA KOGYO CORP17 citations92
US5688852ANov 18, 1997
Iron oxide particles and process for producing the same
TODA KOGYO CORP24 citations92
US5652060AJul 29, 1997
Spherical magnetic particles for magnetic toner and process for producing the same
TODA KOGYO CORP27 citations92
US5648170AJul 15, 1997
Coated granular magnetite particles and process for producing the same
TODA KOGYO CORP20 citations92
US5599627AFeb 4, 1997
Magnetic particles comprising magnetite core and process for producing the same
TODA KOGYO CORP40 citations92
US5389482AFeb 14, 1995
Magnetic particle powder included in magnetic toners for magnetic image character recognition
TODA KOGYO CORP34 citations92
US6780555B2Aug 24, 2004
Black magnetic iron oxide particles and magnetic toner
TODA KOGYO CORP27 citations89
US7670676B2Mar 2, 2010
Pharmaceutical raw material
TODA KOGYO CORP9 citations83
US6383637B1May 7, 2002
Black magnetic iron oxide particles for magnetic toner and process for producing the same
TODA KOGYO CORP15 citations82
US5512405AApr 30, 1996
Iron oxide particles and process for producing the same
TODA KOGYO CORP15 citations82
US5470660ANov 28, 1995
Iron oxide particles and process for producing the same
TODA KOGYO CORP17 citations82
US5328793AJul 12, 1994
Magnetic particles for magnetic toner
TODA KOGYO CORP8 citations73
US7144626B2Dec 5, 2006
Magnetic iron oxide particles and magnetic toner using the same
TODA KOGYO CORP9 citations72
US6103437AAug 15, 2000
Magnetic toner particles comprising magnetite particles containing silicon
TODA KOGYO CORP10 citations72
US5858532AJan 12, 1999
Magnetite particles, magnetic iron oxide particles, process for the production of the same and magnetic toner using the same
TODA KOGYO CORP12 citations72
US5578375ANov 26, 1996
Granular magnetite particles and process for producing the same
TODA KOGYO CORP5 citations62
US5232805AAug 3, 1993
Magnetic particles containing iron as the main component and process for producing the same
TODA KOGYO CORP6 citations59
US7597958B2Oct 6, 2009
Black magnetic iron oxide particles having a specific dissolution of sulfur element
TODA KOGYO CORP1 citations51
US7572505B2Aug 11, 2009
Black magnetic iron oxide particles having high breakdown voltage
TODA KOGYO CORP0 citations51