Inventor · disambiguated record
Akira Matsushima
Also filed as: MATSUSHIMA AKIRA
31 granted patents·7 pending applications·297 citations·filing 1981–2024
97Inventor score
Top patents by PatentIndex Score
38 records- 0197US7971868B2Sheet feeding apparatus and image forming apparatus with lifter mechanismCANON KK·Filed 2008·Granted Jul 5, 2011·31 cites·16 claims
- 0296US9840382B2Sheet supporting apparatus and image forming apparatusCANON KK·Filed 2016·Granted Dec 12, 2017·12 cites·14 claims
- 0395US8430393B2Sheet feeding apparatus and image forming apparatusMATSUSHIMA AKIRA·Filed 2010·Granted Apr 30, 2013·13 cites·16 claims
- 0494US7469892B2Image forming apparatusCANON KK·Filed 2005·Granted Dec 30, 2008·19 cites·9 claims
- 0594US6643480B2Image forming apparatus with demountable sheet conveyor unit in main body for receiving sheets from optional sheet stack connectable theretoCANON KK·Filed 2001·Granted Nov 4, 2003·59 cites·19 claims
- 0693US10233041B2Sheet supporting apparatus and image forming apparatusCANON KK·Filed 2017·Granted Mar 19, 2019·6 cites·15 claims
- 0793US8714543B2Sheet feeding apparatus and image forming apparatusMATSUSHIMA AKIRA·Filed 2012·Granted May 6, 2014·13 cites·10 claims
- 0892US8783677B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2013·Granted Jul 22, 2014·11 cites·11 claims
- 0990US6871848B2Sheet containing apparatus, sheet feeding apparatus provided with the same, and image forming apparatusCANON KK·Filed 2002·Granted Mar 29, 2005·29 cites·15 claims
- 1088US6830245B2Sheet containing device and sheet feeder having the same, and image forming apparatusCANON KK·Filed 2002·Granted Dec 14, 2004·25 cites·13 claims
- 1187US11279576B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2019·Granted Mar 22, 2022·3 cites·6 claims
- 1287US9777401B2Method for producing single crystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Oct 3, 2017·2 cites·9 claims
- 1387US8302956B2Sheet feeding apparatus and image forming apparatus with separation claw and intermittent driveMATSUSHIMA AKIRA·Filed 2010·Granted Nov 6, 2012·8 cites·8 claims
- 1485US9057147B2Silicon carbide epitaxial substrate and method of manufacturing silicon carbide epitaxial substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Jun 16, 2015·2 cites·6 claims
- 1585US7753366B2Sheet feeding apparatus and image forming apparatus with sheet feeding apparatus thereinCANON KK·Filed 2006·Granted Jul 13, 2010·9 cites·6 claims
- 1685US7533880B2Sheet feeding device and image forming apparatusCANON KK·Filed 2006·Granted May 19, 2009·9 cites·10 claims
- 1784US10183820B2Sheet storage apparatus and image forming apparatusCANON KK·Filed 2016·Granted Jan 22, 2019·3 cites·20 claims
- 1879US10611587B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2018·Granted Apr 7, 2020·2 cites·17 claims
- 1978US8727339B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2013·Granted May 20, 2014·3 cites·6 claims
- 2075US11390476B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2019·Granted Jul 19, 2022·1 cites·19 claims
- 2175US9256183B2Image forming apparatus that electrically grounds the sheet cassette upon withdrawal of the sheet cassetteCANON KK·Filed 2014·Granted Feb 9, 2016·3 cites·8 claims
- 2264US9691608B2Silicon carbide substrate, silicon carbide semiconductor device, and methods for manufacturing silicon carbide substrate and silicon carbide semiconductor deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Jun 27, 2017·1 cites·16 claims
- 2363US11661293B2Sheet storage apparatus and image forming apparatusCANON KK·Filed 2021·Granted May 30, 2023·0 cites·18 claims
- 2463US10184191B2Method for manufacturing silicon carbide single crystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Jan 22, 2019·0 cites·11 claims
- 2560US9926150B2Sheet feeding apparatus and image forming apparatus including the sameCANON KK·Filed 2017·Granted Mar 27, 2018·0 cites·8 claims
- 2659US2025026600A1Image forming apparatus capable of reversing sheet conveyance directionCANON KK·Filed 2024·Application pending·0 cites
- 2756US4962433AVideo printer having converting means for converting a video signal into digital picture dataSEIKOSHA KK·Filed 1988·Granted Oct 9, 1990·13 cites·4 claims
- 2856US2015233018A1Silicon carbide epitaxial substrate and method of manufacturing silicon carbide epitaxial substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Application pending·0 cites
- 2953US4372698ADriving device for a print head of a printerMATSUSHIMA AKIRA·Filed 1981·Granted Feb 8, 1983·12 cites·2 claims
- 3053US2016221771A1Sheet feeding apparatus and image forming apparatus including the sameCANON KK·Filed 2016·Application pending·0 cites
- 3147US4990937ADevice for supporting a print headSEIKOSHA KK·Filed 1990·Granted Feb 5, 1991·8 cites·13 claims
- 3245US2008001342A1Sheet feeder and image forming apparatus having said sheet feederCANON KK·Filed 2007·Application pending·0 cites
- 3344US11472648B2Sheet supporting apparatus and image forming apparatusCANON KK·Filed 2019·Granted Oct 18, 2022·0 cites·17 claims
- 3444US7878466B2Apparatus supporting mechanism, sheet feeding apparatus and image forming apparatusCANON KK·Filed 2008·Granted Feb 1, 2011·0 cites·6 claims
- 3541US9777400B2Method for producing single crystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Oct 3, 2017·0 cites·8 claims
- 3640US2008180764A1Image forming apparatusCANON KK·Filed 2008·Application pending·0 cites
- 3740US2016002820A1Crucible and method for producing single crystalSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Application pending·0 cites
- 3836US2011024970A1Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2010·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Akira Matsushima files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →