Inventor
OKANO YOJI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “OKANO YOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TODA KOGYO CORP
17 patentsUS5688852ANov 18, 1997
Iron oxide particles and process for producing the same
TODA KOGYO CORP24 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
US7910214B2Mar 22, 2011
Molded ferrite sheet, sintered ferrite substrate and antenna module
TODA KOGYO CORP9 citations83
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
US6623879B2Sep 23, 2003
Soft-magnetic hexagonal ferrite composite particles, and green sheet using the same and soft-magnetic hexagonal ferrite sintered ceramics
TODA KOGYO CORP9 citations73
US5328793AJul 12, 1994
Magnetic particles for magnetic toner
TODA KOGYO CORP8 citations73
US6398977B1Jun 4, 2002
Strontium iron oxide particle powder and process for producing the same
TODA KOGYO CORP2 citations62
US5578375ANov 26, 1996
Granular magnetite particles and process for producing the same
TODA KOGYO CORP5 citations62
US11096318B2Aug 17, 2021
Ferrite laminate and noise suppression sheet
TODA KOGYO CORP0 citations60
US12505942B2Dec 23, 2025
Ferrite sheet strip, and antenna device and cable using ferrite sheet strip
TODA KOGYO CORP0 citations59
US10714247B2Jul 14, 2020
Ferrite sintered plate and ferrite sintered sheet
TODA KOGYO CORP1 citations54
US9697937B2Jul 4, 2017
Ni—Zn—Cu-based ferrite particles, green sheet comprising the Ni—Zn—Cu-based ferrite particles and Ni—Zn—Cu-based ferrite sintered ceramics
TODA KOGYO CORP0 citations50
US9824802B2Nov 21, 2017
Ferrite sintered plate and ferrite sintered sheet
TODA KOGYO CORP0 citations48
US10128029B2Nov 13, 2018
Ferrite ceramics, ferrite sintered plate and ferrite sintered sheet
TODA KOGYO CORP0 citations38