Inventor · disambiguated record
Akio Maruyama
Also filed as: MARUYAMA AKIO
43 granted patents·7 pending applications·1,256 citations·filing 1983–2025
98Inventor score
Top patents by PatentIndex Score
50 records- 0198US7226711B2Electrophotographic photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge and electrophotographic apparatusCANON KK·Filed 2005·Granted Jun 5, 2007·50 cites·31 claims
- 0297US7749667B2Image forming method, and electrophotographic apparatus making use of the image forming methodCANON KK·Filed 2007·Granted Jul 6, 2010·32 cites·13 claims
- 0397US7718331B2Electrophotographic photosensitive member with depressed portions, process cartridge holding the electrophotographic photosensitive member and electrophotographic apparatus with the electrophotographic photosensitive memberCANON KK·Filed 2007·Granted May 18, 2010·41 cites·8 claims
- 0497US7622238B2Process for producing electrophotographic photosensitive memberCANON KK·Filed 2007·Granted Nov 24, 2009·36 cites·6 claims
- 0597US7551878B2Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatusCANON KK·Filed 2007·Granted Jun 23, 2009·39 cites·7 claims
- 0697US7534534B2Electrophotographic Photosensitive member, method for manufacturing electrophotographic photosensitive member, process cartridge and electrophotographic apparatusCANON KK·Filed 2005·Granted May 19, 2009·36 cites·14 claims
- 0797US7186489B2Electrophotographic photosensitive member, electrophotographic photosensitive member manufacturing process, process cartridge, and electrophotographic apparatusCANON KK·Filed 2005·Granted Mar 6, 2007·48 cites·8 claims
- 0897US6416915B1Electrophotographic photosensitive member, process cartridge and electrophotographic apparatusCANON KK·Filed 1999·Granted Jul 9, 2002·91 cites·17 claims
- 0996US6180303B1Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus, and process for producing the same photosensitive memberCANON KK·Filed 1999·Granted Jan 30, 2001·89 cites·32 claims
- 1095US7563553B2Electrophotographic photosensitive member, process cartridge and electrophotographic apparatusCANON KK·Filed 2007·Granted Jul 21, 2009·16 cites·5 claims
- 1195US7556901B2Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatusCANON KK·Filed 2007·Granted Jul 7, 2009·24 cites·9 claims
- 1295US5455135AElectrophotographic photosensitive member with overlayer and electrophotographic apparatus employing sameCANON KK·Filed 1993·Granted Oct 3, 1995·58 cites·18 claims
- 1392US5422210AElectrophotographic photosensitive member and electrophotographic apparatus, device unit and facsimile machine using the sameCANON KK·Filed 1992·Granted Jun 6, 1995·47 cites·26 claims
- 1491US6372397B1Electrophotographic photosensitive member, process cartridge and electrophotographic apparatusCANON KK·Filed 1999·Granted Apr 16, 2002·53 cites·14 claims
- 1590US5391449AElectrophotographic photosensitive memberCANON KK·Filed 1993·Granted Feb 21, 1995·41 cites·13 claims
- 1690US4898798APhotosensitive member having a light receiving layer comprising a carbonic film for use in electrophotographyCANON KK·Filed 1987·Granted Feb 6, 1990·36 cites·19 claims
- 1788US6664014B1Electrophotographic photosensitive member electrophotographic apparatus using same and device unit using sameCANON KK·Filed 1997·Granted Dec 16, 2003·43 cites·9 claims
- 1887US5693443AElectrophotographic photosensitive member, and process cartridge and electrophotographic apparatus having the sameCANON KK·Filed 1996·Granted Dec 2, 1997·41 cites·12 claims
- 1983US6436597B2Electrophotographic photosensitve member, process for producing electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus which have the electrophotographic photosensitive memberCANON KK·Filed 1999·Granted Aug 20, 2002·33 cites·14 claims
- 2083US5677095AElectrophotographic photosensitive memberCANON KK·Filed 1995·Granted Oct 14, 1997·34 cites·23 claims
- 2182US5667926AElectrophotographic apparatus and image forming processCANON KK·Filed 1995·Granted Sep 16, 1997·37 cites·30 claims
- 2282US5385797AElectrophotographic photosensitive member, and electrophotographic apparatus, device unit, and facsimile machine employing the sameCANON KK·Filed 1992·Granted Jan 31, 1995·27 cites·23 claims
- 2379US6289190B1Electrophotographic apparatus and process cartridgeCANON KK·Filed 1999·Granted Sep 11, 2001·27 cites·56 claims
- 2479US6110628AElectrophotographic photosensitive member, process cartridge, and electrophotographic apparatusCANON KK·Filed 1998·Granted Aug 29, 2000·29 cites·17 claims
- 2576US5176976AOrganic electronic material and electrophotographic photosensitive member containing sameCANON KK·Filed 1991·Granted Jan 5, 1993·21 cites·10 claims
- 2674US6016414AElectrophotographic photosensitive member, electrophotographic apparatus and process cartridgeCANON KK·Filed 1995·Granted Jan 18, 2000·23 cites·10 claims
- 2773US5430527AElectrophotographic apparatus having cleaning width larger than charging widthCANON KK·Filed 1994·Granted Jul 4, 1995·21 cites·5 claims
- 2873US5352552AImage-bearing member and apparatus including sameCANON KK·Filed 1992·Granted Oct 4, 1994·19 cites·15 claims
- 2972US5708932ACharging system and electrophotography apparatusCANON KK·Filed 1997·Granted Jan 13, 1998·21 cites·23 claims
- 3070US5391446AImage holding memberCANON KK·Filed 1991·Granted Feb 21, 1995·18 cites·22 claims
- 3169US2023226544A1Ion-selective membrane, ion-selective electrode, ion sensor, specimen testing device, and complex compoundCANON KK·Filed 2022·Application pending·0 cites
- 3268US12493250B2External additive particles, toner, and method for producing external additive particlesCANON KK·Filed 2021·Granted Dec 9, 2025·0 cites·13 claims
- 3365US11423728B2Banknote inspection device, banknote inspection method, and banknote inspection program productFUJITSU FRONTECH LTD·Filed 2021·Granted Aug 23, 2022·0 cites·16 claims
- 3465US4564784AReduced degradation, high resolution image pickup tubeHITACHI LTD·Filed 1983·Granted Jan 14, 1986·11 cites·20 claims
- 3564US5923925AElectrophotographic apparatusCANON KK·Filed 1997·Granted Jul 13, 1999·16 cites·10 claims
- 3664US5701571AElectrophotographic apparatus, process cartridge, and image forming method featuring a photosensitive member having a conductive surface layer and a cleaning means having conductive propertiesCANON KK·Filed 1996·Granted Dec 23, 1997·18 cites·36 claims
- 3764US2025313710A1Ink, ink cartridge, and ink jet recording methodCANON KK·Filed 2025·Application pending·0 cites
- 3863US5327272AOptical modulation elementCANON KK·Filed 1992·Granted Jul 5, 1994·19 cites·9 claims
- 3962US2022128920A1External additive particle and tonerCANON KK·Filed 2021·Application pending·0 cites
- 4061US4974026AReverse development electrophotographic apparatus and image forming method using a dispersion-type organic photoconductorCANON KK·Filed 1988·Granted Nov 27, 1990·12 cites·13 claims
- 4161US2025264436A1Ion-selective membrane, ion-selective electrode, ion sensor, and specimen testing deviceCANON MEDICAL SYSTEMS CORP·Filed 2025·Application pending·0 cites
- 4260US5890037AElectrophotographic apparatus using photoconductive member chargeable with magnetic brushCANON KK·Filed 1995·Granted Mar 30, 1999·14 cites·36 claims
- 4360US4882257AElectrophotographic deviceCANON KK·Filed 1988·Granted Nov 21, 1989·11 cites·6 claims
- 4454US4892800APhotosensitive member having a photoconductive layer comprising a carbonic film for use in electrophotographyCANON KK·Filed 1987·Granted Jan 9, 1990·9 cites·8 claims
- 4551US2009170023A1Process for producing electrophotographic photosensitive memberCANON KK·Filed 2009·Application pending·0 cites
- 4649US5729801AElectrophotographic apparatus and process cartridgeCANON KK·Filed 1996·Granted Mar 17, 1998·8 cites·13 claims
- 4748US2008096123A1Process for producing electrophotographic photosensitive memberCANON KK·Filed 2007·Application pending·0 cites
- 4847US5484673AElectrophotographic photosensitive memberCANON KK·Filed 1995·Granted Jan 16, 1996·7 cites·7 claims
- 4937US2004043312A1Electrophotographic photosensitive member, process cartridge and electrophotographic apparatusFiled 2002·Application pending·0 cites
- 5030US5838410AOptical modulation elementCANON KK·Filed 1994·Granted Nov 17, 1998·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →