Inventor · disambiguated record
Osamu Ariizumi
Also filed as: ARIIZUMI OSAMU
40 granted patents·6 pending applications·449 citations·filing 2001–2025
97Inventor score
Technology areasG03G
Top patents by PatentIndex Score
46 records- 0197US6721516B2Image forming apparatusRICOH KK·Filed 2002·Granted Apr 13, 2004·85 cites·79 claims
- 0296US7315711B2Image forming apparatus, process cartridge and cleaningless systemRICOH KK·Filed 2005·Granted Jan 1, 2008·25 cites·53 claims
- 0396US6442364B2Image forming apparatus having a developer carrier capable of preventing toner adhesionRICOH KK·Filed 2001·Granted Aug 27, 2002·72 cites·16 claims
- 0494US7616909B2Image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Nov 10, 2009·21 cites·18 claims
- 0594US6597885B2Image forming apparatus having a developing device with a magnet brushRICOH KK·Filed 2001·Granted Jul 22, 2003·45 cites·68 claims
- 0692US7218879B2Image forming apparatus controlling polarity of residual toner and process cartridge for use in the sameRICOH KK·Filed 2004·Granted May 15, 2007·39 cites·14 claims
- 0792US6778805B2Image forming apparatus having a developing device with a magnet brushRICOH KK·Filed 2003·Granted Aug 17, 2004·34 cites·95 claims
- 0891US11556081B2Developing deviceCANON KK·Filed 2020·Granted Jan 17, 2023·2 cites·88 claims
- 0991US7493058B2Image forming apparatus and toner concentration controlling methodRICOH KK·Filed 2006·Granted Feb 17, 2009·13 cites·12 claims
- 1090US10642192B2Developing device having a feeding screw with multiple blade portionsCANON KK·Filed 2018·Granted May 5, 2020·6 cites·14 claims
- 1190US9170527B2Image forming apparatus having developer replenishment controlCANON KK·Filed 2013·Granted Oct 27, 2015·5 cites·3 claims
- 1289US11852989B2Developing deviceCANON KK·Filed 2023·Granted Dec 26, 2023·1 cites·10 claims
- 1387US6901233B2Image forming apparatusRICOH KK·Filed 2003·Granted May 31, 2005·23 cites·13 claims
- 1487US2025298338A1Developing deviceCANON KK·Filed 2025·Application pending·0 cites
- 1586US9268263B2Development apparatus and image forming apparatusCANON KK·Filed 2015·Granted Feb 23, 2016·4 cites·27 claims
- 1686US8155543B2Image forming apparatus capable of reducing a lengthy duration of an adjustment controlISHIBASHI HITOSHI·Filed 2006·Granted Apr 10, 2012·10 cites·18 claims
- 1785US7548704B2Image forming apparatus effectively conducting a process controlRICOH KK·Filed 2007·Granted Jun 16, 2009·8 cites·12 claims
- 1883US10152000B2Developing deviceCANON KK·Filed 2017·Granted Dec 11, 2018·2 cites·15 claims
- 1983US7821677B2Method and apparatus for image forming capable of accurately detecting displacement of transfer images and image densityRICOH KK·Filed 2006·Granted Oct 26, 2010·7 cites·15 claims
- 2083US7672602B2Developing unit and image forming apparatus which forces consumption of tonerRICOH KK·Filed 2006·Granted Mar 2, 2010·7 cites·10 claims
- 2181US7020421B2Magnetic carrier, two-component developer, development method, development device and image forming apparatus of electrophotographyRICOH KK·Filed 2003·Granted Mar 28, 2006·16 cites·30 claims
- 2279US10126683B2Developing apparatusCANON KK·Filed 2017·Granted Nov 13, 2018·1 cites·8 claims
- 2377US10895826B2Conveyance screw and developing apparatusCANON KK·Filed 2019·Granted Jan 19, 2021·1 cites·9 claims
- 2476US12353145B2Developing deviceCANON KK·Filed 2024·Granted Jul 8, 2025·0 cites·9 claims
- 2570US6728504B2Developing device using a magnet brush and image forming apparatus including the sameRICOH KK·Filed 2001·Granted Apr 27, 2004·11 cites·6 claims
- 2667US10877401B2Feeding screw and developing deviceCANON KK·Filed 2019·Granted Dec 29, 2020·0 cites·15 claims
- 2766US10908535B2Method for fixing regulating blade, developing device, developer bearing member, and magnetCANON KK·Filed 2019·Granted Feb 2, 2021·0 cites·19 claims
- 2865US7646996B2Image forming apparatus and control method thereofCANON KK·Filed 2008·Granted Jan 12, 2010·2 cites·13 claims
- 2964US2019033752A1Developing apparatusCANON KK·Filed 2018·Application pending·0 cites
- 3062US8009997B2Toner replenishment determination device of an image forming apparatusRICOH CO LTD·Filed 2006·Granted Aug 30, 2011·2 cites·7 claims
- 3161US2018335725A1Feeding screw and developing deviceCANON KK·Filed 2018·Application pending·0 cites
- 3259US7840152B2Image forming apparatus, process cartridge, cleaning system, and image forming apparatus with cleaning systemRICOH CO LTD·Filed 2009·Granted Nov 23, 2010·1 cites·12 claims
- 3357US7499664B2Image processing apparatus, process cartridge, and cleaning system with residual toner retaining unitRICOH KK·Filed 2004·Granted Mar 3, 2009·5 cites·22 claims
- 3456US7885556B2Image forming apparatus for correcting a toner density target valueRICOH CO LTD·Filed 2006·Granted Feb 8, 2011·1 cites·12 claims
- 3550US10955768B2Developing apparatus and conveyance screwCANON KK·Filed 2020·Granted Mar 23, 2021·0 cites·20 claims
- 3649US10545432B2Feeding screw and developing deviceCANON KK·Filed 2018·Granted Jan 28, 2020·0 cites·15 claims
- 3747US11846892B2Developing deviceCANON KK·Filed 2022·Granted Dec 19, 2023·0 cites·35 claims
- 3847US8346110B2Image forming apparatusCANON KK·Filed 2010·Granted Jan 1, 2013·0 cites·5 claims
- 3946US11556077B2Image formation apparatusCANON KK·Filed 2022·Granted Jan 17, 2023·0 cites·16 claims
- 4046US2025138452A1Developing deviceCANON KK·Filed 2024·Application pending·0 cites
- 4141US2013108328A1Image forming apparatusCANON KK·Filed 2012·Application pending·0 cites
- 4240US10054872B2Image forming apparatus having removable developing unitsCANON KK·Filed 2017·Granted Aug 21, 2018·0 cites·7 claims
- 4340US9804523B2Image forming apparatusCANON KK·Filed 2016·Granted Oct 31, 2017·0 cites·10 claims
- 4439US10146157B2Development apparatus having a multiple screw portion conveyance screwCANON KK·Filed 2017·Granted Dec 4, 2018·0 cites·5 claims
- 4537US2017269505A1Developing deviceCANON KK·Filed 2017·Application pending·0 cites
- 4635US8879929B2Image forming apparatusARIIZUMI OSAMU·Filed 2011·Granted Nov 4, 2014·0 cites·4 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →