Inventor · disambiguated record
Seiji Ishitani
Also filed as: ISHITANI SEIJI
13 granted patents·7 pending applications·95 citations·filing 1999–2014
90Inventor score
Top patents by PatentIndex Score
20 records- 0181US6130017ABlack non-magnetic composite particles for black toner and black toner using the sameTODA KOGYO CORP·Filed 1999·Granted Oct 10, 2000·30 cites·23 claims
- 0280US6416864B1Black magnetic composite particles for a black magnetic tonerTODA KOGYO CORP·Filed 2000·Granted Jul 9, 2002·16 cites·16 claims
- 0378US7767034B2Soft magnetic material, powder magnetic core and method of manufacturing soft magnetic materialSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Aug 3, 2010·4 cites·4 claims
- 0475US6379855B1Black magnetic toner and black magnetic composite particles thereforTODA KOGYO CORP·Filed 2000·Granted Apr 30, 2002·16 cites·33 claims
- 0566US8153256B2Soft magnetic material comprising an insulating layer containing aluminum, silicon, phosphorous and oxygen; dust magnetic core; process for producing soft magnetic material; and process for producing dust magnetic coreMAEDA TORU·Filed 2006·Granted Apr 10, 2012·1 cites·7 claims
- 0665US6458453B1Magnetic recording mediumTODA KOGYO CORP·Filed 2000·Granted Oct 1, 2002·10 cites·23 claims
- 0760US8557330B2Manufacturing method of soft magnetic material and manufacturing method of dust coreMAEDA TORU·Filed 2012·Granted Oct 15, 2013·0 cites·6 claims
- 0858US6689452B2Magnetic recording mediumTODA KOGYO CORP·Filed 2002·Granted Feb 10, 2004·3 cites·19 claims
- 0958US2009042064A1Non-magnetic particles for non-magnetic undercoat layer of magnetic recording medium, and magnetic recording mediumTODA KOGYO CORP·Filed 2008·Application pending·0 cites
- 1057US6251555B1Black magnetic composite particles for black magnetic toner and black magnetic toner using the sameTODA KOGYO CORP·Filed 1999·Granted Jun 26, 2001·12 cites·22 claims
- 1156US8323725B2Soft magnetic material, powder magnetic core and method of manufacturing soft magnetic materialMAEDA TORU·Filed 2010·Granted Dec 4, 2012·0 cites·2 claims
- 1256US2014322437A1Non-magnetic particles for non-magnetic undercoat layer of magnetic recording medium, and magnetic recording mediumTODA KOGYO CORP·Filed 2014·Application pending·0 cites
- 1352US2010035087A1Process for producing ferromagnetic metal particles and magnetic recording mediumTODA KOGYO CORP·Filed 2009·Application pending·0 cites
- 1451US2009220823A1Ferromagnetic metal particles and process for producing the same, and magnetic recording mediumTODA KOGYO CORP·Filed 2009·Application pending·0 cites
- 1546US2008248245A1Soft Magnetic Material, Method of Manufacturing Soft Magnetic Material, Dust Core, and Method of Manufacturing Dust CoreMAEDA TORU·Filed 2006·Application pending·0 cites
- 1643US6562532B2Black magnetic toner and black magnetic composite particles thereforTODA KOGYO CORP·Filed 2002·Granted May 13, 2003·2 cites·18 claims
- 1741US6638675B2Black magnetic tonerTODA KOGYO CORP·Filed 2002·Granted Oct 28, 2003·1 cites·20 claims
- 1840US2012192127A1Method of manufacturing semiconductor deviceUSUI SATOSHI·Filed 2012·Application pending·0 cites
- 1939US6723456B2Hematite particles aggregates, non-magnetic undercoatt layer for magnetic recording medium using the same, and magnetic recording medium having the non-magnetic undercoat layerTODA KOGYO CORP·Filed 2001·Granted Apr 20, 2004·0 cites·16 claims
- 2037US2003175518A1Magnetic composite particles for magnetic color toner, magnetic color toner using the same, method for developing magnetic latent image using the toner, and method for developing electrostatic image using the tonerFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →