Inventor · disambiguated record
Kohei Matsuda
Also filed as: MATSUDA KOHEI
40 granted patents·10 pending applications·216 citations·filing 1984–2025
97Inventor score
Top patents by PatentIndex Score
50 records- 0196US11360416B2Image forming apparatusCANON KK·Filed 2020·Granted Jun 14, 2022·4 cites·17 claims
- 0296US7200350B2Image forming apparatus switching developing rollers of mounted process cartridges between contact and spaced states and switching the contact position of a feeding belt contactable to drums of the mounted cartridgesCANON KK·Filed 2005·Granted Apr 3, 2007·31 cites·8 claims
- 0395US7277659B2Image forming apparatus and seal retractorCANON KK·Filed 2005·Granted Oct 2, 2007·27 cites·11 claims
- 0493US9086670B2Image forming apparatusCANON KK·Filed 2013·Granted Jul 21, 2015·8 cites·14 claims
- 0591US7593670B2Charging device including a contact charging member with silica thereon, process cartridge including a contact charging member, and image forming apparatus including such charging memberCANON KK·Filed 2006·Granted Sep 22, 2009·15 cites·16 claims
- 0690US9335697B2Image forming apparatus having image bearing member life estimation unitCANON KK·Filed 2013·Granted May 10, 2016·6 cites·11 claims
- 0789US11840417B2Sheet bonding apparatusCANON KK·Filed 2022·Granted Dec 12, 2023·1 cites·15 claims
- 0889US7209690B2Developing apparatusCANON KK·Filed 2005·Granted Apr 24, 2007·13 cites·16 claims
- 0988US8190044B2Image forming apparatusKITAMURA TAKUYA·Filed 2009·Granted May 29, 2012·10 cites·9 claims
- 1086US9535372B2Remanufacturing method of developer accommodating unitCANON KK·Filed 2015·Granted Jan 3, 2017·2 cites·27 claims
- 1186US9069312B2Image forming apparatus having capacitance detectionCANON KK·Filed 2013·Granted Jun 30, 2015·4 cites·28 claims
- 1286US7457554B2Image forming apparatus wherein an image forming region and a non-image forming region are charged with different potentialsCANON KK·Filed 2005·Granted Nov 25, 2008·8 cites·12 claims
- 1386US4617482AComplementary type MOS field-effect transistor circuit provided with a gate protection structure of small time constantNEC CORP·Filed 1984·Granted Oct 14, 1986·31 cites·10 claims
- 1485US11592757B2Electrophotographic developer set including toner and powder adhesive, and method for producing bonded productCANON KK·Filed 2021·Granted Feb 28, 2023·1 cites·14 claims
- 1585US7697879B2Electrophotographic image forming apparatus and process cartridgeCANON KK·Filed 2008·Granted Apr 13, 2010·8 cites·4 claims
- 1676US8891983B2Image forming apparatus having waste developer controlTAMAGAKI KUNIAKI·Filed 2012·Granted Nov 18, 2014·3 cites·21 claims
- 1776US7711279B2Image forming apparatus with a predetermined potential difference between regions of an image bearing memberCANON KK·Filed 2008·Granted May 4, 2010·4 cites·9 claims
- 1871US12405561B2Press-bonded sheet manufacturing method, press-bonded sheet manufacturing apparatus, and image forming apparatusCANON KK·Filed 2024·Granted Sep 2, 2025·0 cites·12 claims
- 1969US12187921B2Powder adhesive and bonded articleCANON KK·Filed 2021·Granted Jan 7, 2025·0 cites·14 claims
- 2069US2025181009A1Developing device and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 2168US11960225B2Image forming apparatusCANON KK·Filed 2022·Granted Apr 16, 2024·0 cites·13 claims
- 2268US9091963B2Developing device, cartridge and electrophotographic image forming apparatusCANON KK·Filed 2012·Granted Jul 28, 2015·1 cites·34 claims
- 2368US5886679ADriver circuit for driving liquid-crystal displayNEC CORP·Filed 1996·Granted Mar 23, 1999·37 cites·8 claims
- 2467US9002225B2Image forming apparatus with developer feeding controlCANON KK·Filed 2012·Granted Apr 7, 2015·1 cites·4 claims
- 2566US10067444B2Remanufacturing method of developer accommodating unitCANON KK·Filed 2018·Granted Sep 4, 2018·0 cites·18 claims
- 2666US2025327154A1Fe-Cr-Ni ALLOY MATERIALNIPPON STEEL CORP·Filed 2023·Application pending·0 cites
- 2764US9910387B2Remanufacturing method of developer accommodating unitCANON KK·Filed 2016·Granted Mar 6, 2018·0 cites·22 claims
- 2863US12130585B2Electrophotographic developer set comprising toner and powder adhesive, method for producing bonded product, and powder adhesiveCANON KK·Filed 2021·Granted Oct 29, 2024·0 cites·12 claims
- 2962US12181835B2Electrophotographic developer set comprising toner and powder adhesive, and method for producing bonded productCANON KK·Filed 2021·Granted Dec 31, 2024·0 cites·13 claims
- 3062US8725021B2Image forming apparatus with controlled developer removalMATSUDA KOHEI·Filed 2011·Granted May 13, 2014·1 cites·4 claims
- 3160US2025005701A1Evaluation method, search method, and search systemHITACHI HIGH TECH CORP·Filed 2023·Application pending·0 cites
- 3257US12092970B2Image forming apparatusCANON KK·Filed 2022·Granted Sep 17, 2024·0 cites·6 claims
- 3355US12044997B2Image forming apparatusCANON KK·Filed 2021·Granted Jul 23, 2024·0 cites·17 claims
- 3454US2025162607A1Driving assistance apparatus, driving assistance method, and storage mediumHONDA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3553US2024239624A1Method for manufacturing press-bonded sheet and image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 3653US2024241459A1Image forming apparatus, adhesive cartridge, adhesive container, and process cartridge setCANON KK·Filed 2024·Application pending·0 cites
- 3751US12203945B2Haemoglobin analysis method for detecting abnormal haemoglobins and/or thalassemia markersSEKISUI MEDICAL CO LTD·Filed 2019·Granted Jan 21, 2025·0 cites·10 claims
- 3851US11835898B2Adhesion apparatus for forming image of powder adhesive, and image forming apparatusCANON KK·Filed 2021·Granted Dec 5, 2023·0 cites·8 claims
- 3951US11530915B2Dimension measuring device, dimension measuring method, and semiconductor manufacturing systemHITACHI HIGH TECH CORP·Filed 2019·Granted Dec 20, 2022·0 cites·10 claims
- 4050US11279875B2Nitride phosphor and method for producing nitride phosphorMITSUBISHI CHEM CORP·Filed 2020·Granted Mar 22, 2022·0 cites·20 claims
- 4150US11067938B2Cleaning unit, cartridge, image forming apparatusCANON KK·Filed 2020·Granted Jul 20, 2021·0 cites·11 claims
- 4249US12450520B2Experiment point recommendation device, experiment point recommendation method, and semiconductor device manufacturing deviceHITACHI HIGH TECH CORP·Filed 2021·Granted Oct 21, 2025·0 cites·14 claims
- 4349US10928768B2Cleaning unit, cartridge, image forming apparatusCANON KK·Filed 2020·Granted Feb 23, 2021·0 cites·16 claims
- 4447US2020172971A1Chromatography packing for separation and/or detection of methylated dnaSEKISUI MEDICAL CO LTD·Filed 2018·Application pending·0 cites
- 4541US9052628B2Image forming apparatus having collecting operation for residual tonerMUKAI TAKASHI·Filed 2012·Granted Jun 9, 2015·0 cites·15 claims
- 4639US8948619B2Image forming apparatus which measures time during which an image carrier contacts a toner carrierMATSUDA KOHEI·Filed 2011·Granted Feb 3, 2015·0 cites·8 claims
- 4739US2020310331A1Cleaning unit, cartridge, and image forming apparatusCANON KK·Filed 2020·Application pending·0 cites
- 4838US2020310298A1Cartridge and image forming apparatusCANON KK·Filed 2020·Application pending·0 cites
- 4938US2020310294A1Developing device, process cartridge and image forming apparatusCANON KK·Filed 2020·Application pending·0 cites
- 5029US6104366ADriving device for liquid crystal display with a high yieldNEC CORP·Filed 1997·Granted Aug 15, 2000·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →