Inventor · disambiguated record
Yushi Hirayama
Also filed as: HIRAYAMA YUSHI
31 granted patents·1 pending application·286 citations·filing 2005–2015
97Inventor score
Top patents by PatentIndex Score
32 records- 0198US7251420B2Method and apparatus for image forming capable of effectively detecting toner densityRICOH KK·Filed 2005·Granted Jul 31, 2007·42 cites·30 claims
- 0297US7551862B2Developing device, and process unit and image forming apparatus using the developing deviceRICOH KK·Filed 2007·Granted Jun 23, 2009·29 cites·20 claims
- 0397US7228081B2Method and apparatus for image forming capable of controlling image-forming process conditionsRICOH KK·Filed 2005·Granted Jun 5, 2007·37 cites·81 claims
- 0496US7260335B2Image-information detecting device and image forming apparatusRICOH KK·Filed 2005·Granted Aug 21, 2007·24 cites·19 claims
- 0594US7616909B2Image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Nov 10, 2009·21 cites·18 claims
- 0693US7536121B2Image forming apparatus and image density control methodRICOH KK·Filed 2006·Granted May 19, 2009·16 cites·17 claims
- 0791US7493058B2Image forming apparatus and toner concentration controlling methodRICOH KK·Filed 2006·Granted Feb 17, 2009·13 cites·12 claims
- 0890US7881629B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2007·Granted Feb 1, 2011·11 cites·12 claims
- 0990US7778560B2Image forming apparatus and method of adjusting charge biasRICOH KK·Filed 2007·Granted Aug 17, 2010·10 cites·11 claims
- 1090US7603046B2Image forming apparatus including toner supply controlling unitRICOH KK·Filed 2006·Granted Oct 13, 2009·11 cites·9 claims
- 1187US8045874B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2009·Granted Oct 25, 2011·9 cites·19 claims
- 1287US7747182B2Image forming apparatus with toner density controlRICOH KK·Filed 2006·Granted Jun 29, 2010·9 cites·9 claims
- 1385US7548704B2Image forming apparatus effectively conducting a process controlRICOH KK·Filed 2007·Granted Jun 16, 2009·8 cites·12 claims
- 1483US8095025B2Image forming apparatus capable of efficient toner concentration controlISHIBASHI HITOSHI·Filed 2007·Granted Jan 10, 2012·7 cites·20 claims
- 1583US7672602B2Developing unit and image forming apparatus which forces consumption of tonerRICOH KK·Filed 2006·Granted Mar 2, 2010·7 cites·10 claims
- 1678US7668471B2Image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Feb 23, 2010·5 cites·16 claims
- 1776US7929873B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2008·Granted Apr 19, 2011·5 cites·15 claims
- 1876US7809291B2Image forming apparatus with a two component developer, toner density detection and toner density correctionRICOH KK·Filed 2006·Granted Oct 5, 2010·5 cites·14 claims
- 1972US8879963B2Toner supplying device and image forming apparatus using sameHIRAYAMA YUSHI·Filed 2010·Granted Nov 4, 2014·2 cites·16 claims
- 2068US8145100B2Process cartridge including developing unit and incorporated in image forming apparatusHIRAYAMA YUSHI·Filed 2009·Granted Mar 27, 2012·3 cites·13 claims
- 2167US8099006B2Image forming apparatus and image quality correction method used thereinFUJIMORI KOHTA·Filed 2009·Granted Jan 17, 2012·3 cites·19 claims
- 2264US8027605B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2008·Granted Sep 27, 2011·2 cites·8 claims
- 2362US8009997B2Toner replenishment determination device of an image forming apparatusRICOH CO LTD·Filed 2006·Granted Aug 30, 2011·2 cites·7 claims
- 2460US8311422B2Image forming apparatus having a first and second toner containers and a developing unitHIRAYAMA YUSHI·Filed 2009·Granted Nov 13, 2012·2 cites·5 claims
- 2557US8175471B2Image forming apparatus and image density control methodTOMITA KENTAROH·Filed 2007·Granted May 8, 2012·2 cites·19 claims
- 2656US7885556B2Image forming apparatus for correcting a toner density target valueRICOH CO LTD·Filed 2006·Granted Feb 8, 2011·1 cites·12 claims
- 2753US8103181B2Image forming apparatus and method of adjusting charge biasISHIBASHI HITOSHI·Filed 2010·Granted Jan 24, 2012·0 cites·19 claims
- 2846US7903986B2Reuse method and a reusable device for an image forming apparatus having a first process linear velocity and a second image processing apparatus having a second process linear velocityRICOH CO LTD·Filed 2009·Granted Mar 8, 2011·0 cites·13 claims
- 2945US8818244B2Developing device and image forming apparatusHIRAYAMA YUSHI·Filed 2012·Granted Aug 26, 2014·0 cites·6 claims
- 3043US8233813B2Image forming apparatus and image-density control methodYOSHIDA AKIRA·Filed 2009·Granted Jul 31, 2012·0 cites·6 claims
- 3142US8867937B2Diffuse reflection output conversion method, attached powder amount conversion method, and image forming apparatusMUROI HIDEO·Filed 2012·Granted Oct 21, 2014·0 cites·9 claims
- 3223US2015234316A1Image forming apparatus incorporating controller for determining exposure used for image formation and image forming method for determining exposure used for image formationKANAYA HIDEAKI·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →