Inventor
OKINAKA KENJI
JP23 patents
⚠️ This page may combine multiple inventors who share the name “OKINAKA KENJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TODA KOGYO CORP
21 patentsUS5645652AJul 8, 1997
Spindle-shaped magnetic iron-based alloy particles containing cobalt and iron as the main ingredients and process for producing the same
TODA KOGYO CORP29 citations92
US5156922AOct 20, 1992
Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same
TODA KOGYO CORP25 citations91
US7022256B2Apr 4, 2006
Iron particles for purifying contaminated soil or ground water
TODA KOGYO CORP25 citations90
US5531922AJul 2, 1996
Granulated particles for magnetic particles for magnetic recording, and process for producing the same
TODA KOGYO CORP33 citations90
US7220366B2May 22, 2007
Process for purifying contaminated soil or groundwater with iron particles
TODA KOGYO CORP10 citations81
US6753084B2Jun 22, 2004
Spindle-shaped magnetic alloy particles for magnetic recording, and magnetic recording medium
TODA KOGYO CORP7 citations73
US6627313B2Sep 30, 2003
Spindle-shaped magnetic metal particles containing iron as main component and processes for producing the same
TODA KOGYO CORP8 citations73
US6398863B1Jun 4, 2002
Spindle-shaped hematite particles and process for making spindle-shaped hematite particles
TODA KOGYO CORP11 citations73
US6391450B1May 21, 2002
Spindle-shaped goethite particles, spindle-shaped hematite particles, spindle-shaped magnetic iron-based alloy particles, and process for producing the same
TODA KOGYO CORP10 citations73
US6309479B1Oct 30, 2001
Spindle-shaped goethite particles, spindle-shaped hematite particles and magnetic spindle-shaped metal particles containing iron as main component
TODA KOGYO CORP6 citations73
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
US6544673B1Apr 8, 2003
Spindle-shaped magnetic metal particles containing iron as main component and processes for producing the same
TODA KOGYO CORP6 citations62
US5989516ANov 23, 1999
Spindle-shaped geothite particles
TODA KOGYO CORP4 citations62
US5968226AOct 19, 1999
Process of making goethite or iron-based alloy particles
TODA KOGYO CORP4 citations62
US5238483AAug 24, 1993
Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same
TODA KOGYO CORP2 citations61
US7351355B2Apr 1, 2008
Purifying agent for purifying soil or ground water, process for producing the same, and method for purifying soil or ground water using the same
TODA KOGYO CORP3 citations58
US7482384B2Jan 27, 2009
Iron composite particles for purifying soil or ground water, process for producing the same, purifying agent containing the same, process for producing the purifying agent and method for purifying soil or ground water
TODA KOGYO CORP0 citations51
US6830635B2Dec 14, 2004
Spindle-shaped goethite particles, spindle-shaped hematite particles, spindle-shaped magnetic metal particles containing iron as main component and processes for producing the same
TODA KOGYO CORP0 citations51
US6783608B2Aug 31, 2004
Secondary agglomerates of magnetic metal particles for magnetic recording and process for producing the same
TODA KOGYO CORP0 citations51
US6720094B2Apr 13, 2004
Secondary agglomerates of magnetic metal particles for magnetic recording and process for producing the same
TODA KOGYO CORP1 citations51