Inventor
KURITA EIICHI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “KURITA EIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TODA KOGYO CORP
14 patentsUS5336421AAug 9, 1994
Spinel-type spherical, black iron oxide particles and process for the producing the same
TODA KOGYO CORP58 citations95
US5688852ANov 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
US5389482AFeb 14, 1995
Magnetic particle powder included in magnetic toners for magnetic image character recognition
TODA KOGYO CORP34 citations92
US5108862AApr 28, 1992
Composite carrier particles for electrophotography and process for producing the same
TODA KOGYO CORP24 citations91
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
US5688998ANov 18, 1997
Surface reforming agent, surface reforming method and cone-type calix 4! re
TODA KOGYO CORP14 citations73
US5328793AJul 12, 1994
Magnetic particles for magnetic toner
TODA KOGYO CORP8 citations73
US5232805AAug 3, 1993
Magnetic particles containing iron as the main component and process for producing the same
TODA KOGYO CORP6 citations59
US12502637B2Dec 23, 2025
Solid recovery material for carbon dioxide and method for producing same
TODA KOGYO CORP0 citations58
US12421132B2Sep 23, 2025
Sodium ferrite particle powder and production method thereof
TODA KOGYO CORP0 citations58
US9921510B2Mar 20, 2018
Magnetic carrier for electrophotographic developer and process for producing the same, and two-component system developer
TODA KOGYO CORP0 citations47
US9952524B2Apr 24, 2018
Magnetic carrier for electrophotographic developer and process for producing the same, and two-component system developer
TODA KOGYO CORP0 citations39
KINOSHITA KAORI
2 patentsUS9778586B2Oct 3, 2017
Core material of magnetic carrier for electrophotographic developer and process for producing the same, magnetic carrier for electrophotographic developer, and two-component system developer
KINOSHITA KAORI2 citations66
US8673529B2Mar 18, 2014
Magnetic carrier for electrophotographic developer and process for producing the same, and two-component system developer
KINOSHITA KAORI0 citations45