Inventor · disambiguated record
Akihiko Uchiyama
Also filed as: UCHIYAMA AKIHIKO
54 granted patents·12 pending applications·923 citations·filing 1993–2025
98Inventor score
Top patents by PatentIndex Score
66 records- 0198US11175600B2TonerCANON KK·Filed 2020·Granted Nov 16, 2021·16 cites·7 claims
- 0297US6638582B1Phase difference film, phase difference film composite and liquid crystal display device using the sameTEIJIN LTD·Filed 2000·Granted Oct 28, 2003·190 cites·15 claims
- 0396US6565974B1Retardation film and optical device employing itTEIJIN LTD·Filed 1999·Granted May 20, 2003·161 cites·26 claims
- 0494US10168633B2Image forming apparatus having image color gamut enlargement modeCANON KK·Filed 2017·Granted Jan 1, 2019·7 cites·12 claims
- 0593US10018951B2Image forming apparatus with controllable velocity ratio between image and developer bearing membersCANON KK·Filed 2017·Granted Jul 10, 2018·6 cites·18 claims
- 0691US11237510B2Image forming apparatusCANON KK·Filed 2020·Granted Feb 1, 2022·2 cites·7 claims
- 0790US6473574B1Image forming apparatus with plural transfer means and selecting mechanism for selecting from among a plurality of image bearing membersCANON KK·Filed 2000·Granted Oct 29, 2002·36 cites·60 claims
- 0889US7012663B2Liquid crystal display element, and use of phase difference film used the same forTEIJIN LTD·Filed 2002·Granted Mar 14, 2006·46 cites·14 claims
- 0989US6473572B1Image forming apparatus having function for judging life of unit detachably mountable thereto, and unit detachably mountable to image forming apparatusCANON KK·Filed 2000·Granted Oct 29, 2002·31 cites·21 claims
- 1088US8532531B2Image forming apparatus comprising a charging unit including plural conductive fibersSHIMURA MASARU·Filed 2010·Granted Sep 10, 2013·5 cites·8 claims
- 1187US5307127ADeveloping apparatus using one component toner with improved flowabilityCANON KK·Filed 1993·Granted Apr 26, 1994·35 cites·20 claims
- 1285US10331064B2Image forming apparatusCANON KK·Filed 2018·Granted Jun 25, 2019·2 cites·15 claims
- 1385US5508796AImage forming apparatus with select relation among distances in recording material conveyance pathCANON KK·Filed 1994·Granted Apr 16, 1996·32 cites·9 claims
- 1484US11294315B2Image forming apparatus operable in modes having different color gamutsCANON KK·Filed 2020·Granted Apr 5, 2022·1 cites·14 claims
- 1582US5678130ADeveloping apparatus including a control function for applied periodic developing bias fieldCANON KK·Filed 1996·Granted Oct 14, 1997·32 cites·12 claims
- 1682US5523829AImage forming apparatus having recording material carrying memberCANON KK·Filed 1993·Granted Jun 4, 1996·27 cites·43 claims
- 1779US6177153B1Orientated film having poresTEIJIN LTD·Filed 1997·Granted Jan 23, 2001·50 cites·30 claims
- 1878US9459584B2Image forming apparatusCANON KK·Filed 2014·Granted Oct 4, 2016·2 cites·46 claims
- 1978US8203676B2Retardation film, laminated polarizing film, and liquid crystal display deviceUCHIYAMA AKIHIKO·Filed 2008·Granted Jun 19, 2012·7 cites·27 claims
- 2077US5873010AImage forming apparatus for performing correction control, based on density of toner imageCANON KK·Filed 1994·Granted Feb 16, 1999·22 cites·8 claims
- 2175US10359315B2Colorimetry apparatus and image forming apparatusCANON KK·Filed 2017·Granted Jul 23, 2019·1 cites·22 claims
- 2275US5369478ADeveloping apparatusCANON KK·Filed 1993·Granted Nov 29, 1994·20 cites·9 claims
- 2374US11789392B2Image forming apparatusCANON KK·Filed 2022·Granted Oct 17, 2023·0 cites·6 claims
- 2474US10018939B2Electrophotographic or electrostatic recording type image forming apparatusCANON KK·Filed 2017·Granted Jul 10, 2018·1 cites·9 claims
- 2574US8029084B2Image forming apparatusCANON KK·Filed 2006·Granted Oct 4, 2011·4 cites·5 claims
- 2673US6881453B2Optical filmBAYER AG·Filed 2001·Granted Apr 19, 2005·16 cites·19 claims
- 2773US6800697B2Process for producing retardation filmTEIJIN LTD·Filed 2001·Granted Oct 5, 2004·15 cites·17 claims
- 2871US8862039B2Image forming apparatusYOSHIDA TSUGUHIRO·Filed 2012·Granted Oct 14, 2014·2 cites·22 claims
- 2971US8140059B2Portable information terminal deviceOKUDA KEI·Filed 2007·Granted Mar 20, 2012·5 cites·8 claims
- 3071US5666588AImage forming apparatus for performing image density controlCANON KK·Filed 1996·Granted Sep 9, 1997·21 cites·29 claims
- 3170US5559591AImage forming apparatus with function of requesting exchange of fixing unitCANON KK·Filed 1995·Granted Sep 24, 1996·20 cites·3 claims
- 3270US2025237978A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 3368US10642209B2Image forming apparatus operable in modes having different color gamutsCANON KK·Filed 2018·Granted May 5, 2020·0 cites·11 claims
- 3467US10866554B2Image forming apparatus operable in modes having different color gamutsCANON KK·Filed 2020·Granted Dec 15, 2020·0 cites·12 claims
- 3567US10838342B2Image forming apparatusCANON KK·Filed 2020·Granted Nov 17, 2020·0 cites·11 claims
- 3667US7116445B2Image forming apparatus and image forming methodCANON KK·Filed 2004·Granted Oct 3, 2006·7 cites·24 claims
- 3765US10837835B2Colorimetry apparatus and image forming apparatusCANON KK·Filed 2019·Granted Nov 17, 2020·0 cites·12 claims
- 3864US10041834B2Color measuring apparatus, image forming apparatus and color measuring methodCANON KK·Filed 2015·Granted Aug 7, 2018·1 cites·25 claims
- 3963US9904225B2Image forming apparatusCANON KK·Filed 2017·Granted Feb 27, 2018·0 cites·14 claims
- 4063US5940654AImage forming apparatus with development control based on density detection of developed control imageCANON KK·Filed 1996·Granted Aug 17, 1999·16 cites·7 claims
- 4158US5543900AImage forming apparatus which reduces toner fusion on an image bearing memberCANON KK·Filed 1994·Granted Aug 6, 1996·11 cites·10 claims
- 4257US7713197B2Pressure measuring method, pressure measuring device, and tonometerUNIV WASEDA·Filed 2005·Granted May 11, 2010·1 cites·10 claims
- 4357US2025208553A1Image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 4456US8111459B2Laminated polarizing film, phase retardation film, and liquid crystal display deviceUCHIYAMA AKIHIKO·Filed 2007·Granted Feb 7, 2012·2 cites·20 claims
- 4556US5666597AImage forming apparatus with delayed discharge by discharge meansCANON KK·Filed 1996·Granted Sep 9, 1997·12 cites·42 claims
- 4654USRE39753ERetardation film and optical device employing itTEIJIN LTD·Filed 1999·Granted Jul 31, 2007·12 cites·26 claims
- 4754US2014029963A1Colorimetry apparatus and image forming apparatusCANON KK·Filed 2013·Application pending·0 cites
- 4853US11392068B2Image forming apparatusCANON KK·Filed 2021·Granted Jul 19, 2022·0 cites·10 claims
- 4953US7223451B2Polycarbonate-based oriented film and retardation filmTEIJIN LTD·Filed 2003·Granted May 29, 2007·2 cites·11 claims
- 5053US5697011AImage forming apparatus and a density measuring method in which a density measuring mode is changed in accordance with a developed imageCANON KK·Filed 1994·Granted Dec 9, 1997·9 cites·12 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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