Inventor · disambiguated record
Keiko Matsumoto
Also filed as: MATSUMOTO KEIKO
29 granted patents·10 pending applications·168 citations·filing 1997–2023
96Inventor score
Top patents by PatentIndex Score
39 records- 0191US11435327B2Supercritical fluid chromatograph and supercritical fluid chromatography analysis methodSHIMADZU CORP·Filed 2018·Granted Sep 6, 2022·4 cites·8 claims
- 0291US7413839B2Toner, developer, toner container, process cartridge, and an image forming apparatusRICOH KK·Filed 2005·Granted Aug 19, 2008·12 cites·22 claims
- 0391US7379696B2Toner for developing electrostatic image, fixing method for fixing image formed of the toner, and image forming method and process cartridge using the tonerRICOH KK·Filed 2005·Granted May 27, 2008·13 cites·9 claims
- 0489US7550243B2Toner, developer, toner container, process cartridge, fixing process, image forming apparatus, and image forming processRICOH KK·Filed 2008·Granted Jun 23, 2009·9 cites·7 claims
- 0588US6697414B1Light emitting apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Feb 24, 2004·28 cites·20 claims
- 0685US7962071B2Developing device and image forming apparatus using sameRICOH CO LTD·Filed 2008·Granted Jun 14, 2011·8 cites·19 claims
- 0785US7801467B2Developing-agent container, method of manufacturing developing-agent container, developing-agent supplying device, and image forming apparatusRICOH KK·Filed 2007·Granted Sep 21, 2010·8 cites·20 claims
- 0881US9651910B2Image forming apparatus incorporating line sensorKOSUGE AKIO·Filed 2016·Granted May 16, 2017·2 cites·16 claims
- 0977US9316954B2Image forming apparatusYOSHIDA KEN·Filed 2013·Granted Apr 19, 2016·2 cites·19 claims
- 1077US7925190B2Developer supply device and image forming apparatus comprising sameRICOH CO LTD·Filed 2007·Granted Apr 12, 2011·5 cites·15 claims
- 1175US8660468B2Developing device including refill operationMATSUMOTO KEIKO·Filed 2011·Granted Feb 25, 2014·2 cites·15 claims
- 1271US8014704B2Developing agent storage device and image forming apparatus having same in which the chargeability level of the toner, storage device, and carrier have a specific relationshipRICOH CO LTD·Filed 2008·Granted Sep 6, 2011·3 cites·10 claims
- 1370US5844410ADevice for optically measuring physical quantity in power equipment and method of manufacturing the sameTOSHIBA KK·Filed 1997·Granted Dec 1, 1998·24 cites·19 claims
- 1468US8185001B2Image forming apparatus and methodMATSUMOTO KEIKO·Filed 2009·Granted May 22, 2012·3 cites·14 claims
- 1567US8165508B2Developer loading method, loaded developer accommodating container, developer replenishment device, and image forming apparatusMATSUMOTO KEIKO·Filed 2008·Granted Apr 24, 2012·3 cites·11 claims
- 1663US7022311B1Powdery inhalational preparations and process for producing the sameKAKEN PHARMA CO LTD·Filed 2000·Granted Apr 4, 2006·24 cites·19 claims
- 1763US2025189504A1Taste information providing method and programSHIMADZU CORP·Filed 2023·Application pending·0 cites
- 1863US2023258670A1Sensory test and entrusted analysis methodSHIMADZU CORP·Filed 2023·Application pending·0 cites
- 1961US7991330B2Developing unit including developer conveyance system having supply path, recovery path, and agitation path, process cartridge including developing unit, and image forming apparatus including process cartridgeRICOH CO LTD·Filed 2008·Granted Aug 2, 2011·2 cites·15 claims
- 2060US8295737B2Developing device and image forming apparatus using sameTSUDA KIYONORI·Filed 2008·Granted Oct 23, 2012·2 cites·15 claims
- 2160US2023252350A1Machine learning methodSHIMADZU CORP·Filed 2023·Application pending·0 cites
- 2252US8064807B2Developer supply system and image forming apparatus incorporating sameKOEDA MAIKO·Filed 2009·Granted Nov 22, 2011·1 cites·20 claims
- 2351US7811779B2Method of multiquantification for cholesterol of low-density lipoproteinDENKA SEIKEN KK·Filed 2005·Granted Oct 12, 2010·0 cites·4 claims
- 2449US7658338B2Small fixed quantity dispenser for aerosol containerTAISHO PHARMACEUTICAL CO LTD·Filed 2004·Granted Feb 9, 2010·4 cites·3 claims
- 2549US2007137649A1Subdivisional fixed amount distributing device for aerosol containersMATSUMOTO KEIKO·Filed 2004·Application pending·0 cites
- 2649US2022214283A1Method for identifying generation sources of fine particulates in atmosphereHAYAKAWA KAZUICHI·Filed 2019·Application pending·0 cites
- 2748US2014179018A1Method for analyzing halogen oxoacidsWATANABE JUN·Filed 2011·Application pending·0 cites
- 2847US9857745B2Image forming apparatus incorporating image readerMATSUE NATSUMI·Filed 2016·Granted Jan 2, 2018·0 cites·8 claims
- 2947US9366989B2Image forming apparatusITO DAISUKE·Filed 2015·Granted Jun 14, 2016·0 cites·15 claims
- 3045US10564654B2Loop injection mechanismSHIMADZU CORP·Filed 2018·Granted Feb 18, 2020·0 cites·12 claims
- 3143US2009181413A1Simultaneous and differential quantification of two target analytes in biological sampleDENKA SEIKEN KK·Filed 2006·Application pending·0 cites
- 3241US12117426B2Biological membrane phosphoinositide separation methodSHIMADZU CORP·Filed 2019·Granted Oct 15, 2024·0 cites·3 claims
- 3341US8086117B2Image forming apparatus and developer replenishing methodUNO MUGIJIROU·Filed 2008·Granted Dec 27, 2011·0 cites·7 claims
- 3441US2009016777A1Developer container filled with developer for image forming apparatus, and method for producing developer container filled with developerMIYAMOTO SATORU·Filed 2008·Application pending·0 cites
- 3538US10459071B2Orthogonal separation device and orthogonal separation methodJAPAN RADIO CO LTD·Filed 2015·Granted Oct 29, 2019·0 cites·7 claims
- 3637US8121498B2Image forming apparatus and developer supply method thereforUNO MUGIJIRO·Filed 2008·Granted Feb 21, 2012·0 cites·16 claims
- 3737US5915059AOptical fiber cable and a method for manufacturing the sameTOSHIBA KK·Filed 1997·Granted Jun 22, 1999·9 cites·24 claims
- 3837US2008175628A1Powder filling method, powder container, developer replenishing device, developer replenishing method, and image forming apparatusKITA EMI·Filed 2008·Application pending·0 cites
- 3935US2017248889A1Image density detector, image forming apparatus incorporating image density detector, image density detecting method, and image forming methodUEMATSU YUUICHIROH·Filed 2017·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →