Inventor · disambiguated record
Kazunari Hagiwara
Also filed as: HAGIWARA KAZUNARI
37 granted patents·1 pending application·125 citations·filing 2004–2024
96Inventor score
Top patents by PatentIndex Score
38 records- 0196US10452021B2Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2018·Granted Oct 22, 2019·14 cites·8 claims
- 0291US7379693B2Developing apparatusCANON KK·Filed 2006·Granted May 27, 2008·14 cites·16 claims
- 0391US7251441B2Developing apparatus including magnetic field generating means, for use with a developer which includes a magnetic toner componentCANON KK·Filed 2005·Granted Jul 31, 2007·13 cites·9 claims
- 0490US9442418B2Developing device, process cartridge and image forming apparatusCANON KK·Filed 2015·Granted Sep 13, 2016·4 cites·57 claims
- 0586US9134649B2Image forming apparatusCANON KK·Filed 2014·Granted Sep 15, 2015·4 cites·7 claims
- 0684US9261811B2Developer carrying member, developing assembly, process cartridge, and image forming apparatusCANON KK·Filed 2014·Granted Feb 16, 2016·3 cites·10 claims
- 0782US9298128B2Image forming apparatusCANON KK·Filed 2014·Granted Mar 29, 2016·3 cites·10 claims
- 0882US7463854B2Developing apparatus, processing cartridge, and image forming apparatusCANON KK·Filed 2007·Granted Dec 9, 2008·7 cites·33 claims
- 0978US7239831B2Image forming apparatus when a maximum developing bias voltage |V| max and surface potential Vd of a charged image bearing member satisfy: |V| max≦|Vd|CANON KK·Filed 2004·Granted Jul 3, 2007·16 cites·11 claims
- 1076US7440718B2Developing apparatus featuring image defect supressionCANON KK·Filed 2006·Granted Oct 21, 2008·5 cites·12 claims
- 1176US7378189B2Electrode material for lithium secondary battery, electrode structure employing electrode material, and lithium secondary battery having electrode structureCANON KK·Filed 2004·Granted May 27, 2008·13 cites·12 claims
- 1273US9405217B2Developer carrying member and image forming apparatusCANON KK·Filed 2015·Granted Aug 2, 2016·1 cites·5 claims
- 1373US7773923B2Developing apparatus and image forming apparatusCANON KK·Filed 2008·Granted Aug 10, 2010·4 cites·9 claims
- 1472US9594320B2Toner and method of producing the tonerCANON KK·Filed 2015·Granted Mar 14, 2017·1 cites·3 claims
- 1572US9501000B2Image forming apparatusCANON KK·Filed 2015·Granted Nov 22, 2016·1 cites·6 claims
- 1672US9261814B2Developer carrying member, developing assembly, process cartridge, and image forming apparatusCANON KK·Filed 2014·Granted Feb 16, 2016·1 cites·10 claims
- 1772US7383003B2Developing apparatus for preventing ghost images and uneven image densityCANON KK·Filed 2006·Granted Jun 3, 2008·4 cites·12 claims
- 1871US11782356B2Developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2022·Granted Oct 10, 2023·0 cites·12 claims
- 1970US8019258B2Developing apparatusCANON KK·Filed 2010·Granted Sep 13, 2011·1 cites·7 claims
- 2070US7640150B2Method of judging the propriety of a positive electrode active materialCANON KK·Filed 2008·Granted Dec 29, 2009·1 cites·5 claims
- 2168US11442376B2Developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2021·Granted Sep 13, 2022·0 cites·14 claims
- 2266US7233758B2Developing apparatus featuring a developer carrying member with an elastic surface layerCANON KK·Filed 2004·Granted Jun 19, 2007·9 cites·19 claims
- 2363US12510846B2Developing deviceCANON KK·Filed 2024·Granted Dec 30, 2025·0 cites·10 claims
- 2462US7615313B2Electrode material for lithium secondary battery including particles having central portion and surface portion, electrode structure and lithium secondary batteryCANON KK·Filed 2004·Granted Nov 10, 2009·4 cites·12 claims
- 2561US10747140B2Developing apparatus, developer carrying member, process cartridge, and image forming apparatusCANON KK·Filed 2019·Granted Aug 18, 2020·0 cites·25 claims
- 2660US9217962B2Image forming apparatusKARASHIMA KENJI·Filed 2011·Granted Dec 22, 2015·1 cites·12 claims
- 2758US8489011B2Image forming apparatus and image forming systemCANON KK·Filed 2012·Granted Jul 16, 2013·0 cites·4 claims
- 2858US7840168B2Developing apparatusCANON KK·Filed 2007·Granted Nov 23, 2010·1 cites·14 claims
- 2956US11036161B2Developer bearing member, developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2020·Granted Jun 15, 2021·0 cites·29 claims
- 3053US12393150B2Image forming apparatus having blurring supressionCANON KK·Filed 2023·Granted Aug 19, 2025·0 cites·10 claims
- 3153US10719028B2Process cartridge and image forming apparatusCANON KK·Filed 2019·Granted Jul 21, 2020·0 cites·14 claims
- 3248US10935904B2Image forming apparatusCANON KK·Filed 2019·Granted Mar 2, 2021·0 cites·16 claims
- 3346US11892791B2Image forming apparatusCANON KK·Filed 2022·Granted Feb 6, 2024·0 cites·27 claims
- 3446US8437678B2Image forming apparatus and image forming systemHAGIWARA KAZUNARI·Filed 2009·Granted May 7, 2013·0 cites·19 claims
- 3545US10437171B2Developing device, process cartridge and image forming apparatusCANON KK·Filed 2018·Granted Oct 8, 2019·0 cites·16 claims
- 3644US10394162B2Developing apparatus, process cartridge, and image forming apparatusCANON KK·Filed 2018·Granted Aug 27, 2019·0 cites·14 claims
- 3743US10444660B2Developing apparatus with regulating member having a curved contact surface and image forming apparatusCANON KK·Filed 2018·Granted Oct 15, 2019·0 cites·12 claims
- 3839US2008310886A1Developer regulating apparatus and developing apparatusCANON KK·Filed 2008·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Kazunari Hagiwara 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 →