Inventor · disambiguated record
Nobutaka Takeuchi
Also filed as: TAKEUCHI NOBUTAKA
75 granted patents·1,357 citations·filing 1998–2015
99Inventor score
Top patents by PatentIndex Score
75 records- 0199US6366751B1Image forming apparatus including preselected range between charge injection layer and voltage potentialRICOH KK·Filed 2000·Granted Apr 2, 2002·182 cites·57 claims
- 0298US7171145B2Developing device and process cartridge for an image forming apparatusRICOH KK·Filed 2006·Granted Jan 30, 2007·44 cites·12 claims
- 0398US6625409B2Image forming apparatus having a diamond-like structure surface protection layer on a photoconductive layerRICOH KK·Filed 2002·Granted Sep 23, 2003·70 cites·24 claims
- 0497US7551862B2Developing device, and process unit and image forming apparatus using the developing deviceRICOH KK·Filed 2007·Granted Jun 23, 2009·29 cites·20 claims
- 0597US7356288B2Developing apparatus having improved agitation effectRICOH KK·Filed 2005·Granted Apr 8, 2008·39 cites·24 claims
- 0697US7346286B2Method and apparatus for image forming effectively detecting deterioration of developerRICOH KK·Filed 2005·Granted Mar 18, 2008·37 cites·40 claims
- 0797US6654579B2Image forming apparatus including diamond-like or amorphous structure containing hydrogen surface protection layerRICOH KK·Filed 2002·Granted Nov 25, 2003·65 cites·22 claims
- 0896US6757509B2Image forming apparatusRICOH KK·Filed 2001·Granted Jun 29, 2004·56 cites·10 claims
- 0996US6442364B2Image forming apparatus having a developer carrier capable of preventing toner adhesionRICOH KK·Filed 2001·Granted Aug 27, 2002·72 cites·16 claims
- 1095US7313336B2Method and apparatus for image forming capable of effectively recycling tonerRICOH KK·Filed 2005·Granted Dec 25, 2007·25 cites·33 claims
- 1195US7245853B2Developer container, developer supplying unit, and image forming apparatusRICOH KK·Filed 2004·Granted Jul 17, 2007·59 cites·22 claims
- 1294US7616909B2Image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Nov 10, 2009·21 cites·18 claims
- 1394US6597885B2Image forming apparatus having a developing device with a magnet brushRICOH KK·Filed 2001·Granted Jul 22, 2003·45 cites·68 claims
- 1493US7536121B2Image forming apparatus and image density control methodRICOH KK·Filed 2006·Granted May 19, 2009·16 cites·17 claims
- 1593US7515844B2Image density control method and image forming apparatusRICOH KK·Filed 2006·Granted Apr 7, 2009·19 cites·14 claims
- 1693US7127198B2Image forming apparatus including a developer replenishing device for a two-ingredient type developerRICOH KK·Filed 2004·Granted Oct 24, 2006·38 cites·22 claims
- 1793US5937228AImage forming apparatusRICOH KK·Filed 1998·Granted Aug 10, 1999·60 cites·27 claims
- 1892US6778805B2Image forming apparatus having a developing device with a magnet brushRICOH KK·Filed 2003·Granted Aug 17, 2004·34 cites·95 claims
- 1992US6665511B2Developing device and image forming apparatus including the sameRICOH KK·Filed 2002·Granted Dec 16, 2003·38 cites·12 claims
- 2091US9323200B2Image forming apparatus that performs parameter correction processing according to an image density in a predetermined regionTAKEUCHI NOBUTAKA·Filed 2014·Granted Apr 26, 2016·7 cites·16 claims
- 2191US7512364B2Image forming apparatus including a developer replenishing device for a two-ingredient type developerRICOH KK·Filed 2006·Granted Mar 31, 2009·10 cites·8 claims
- 2291US7493058B2Image forming apparatus and toner concentration controlling methodRICOH KK·Filed 2006·Granted Feb 17, 2009·13 cites·12 claims
- 2390US7881629B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2007·Granted Feb 1, 2011·11 cites·12 claims
- 2490US7778560B2Image forming apparatus and method of adjusting charge biasRICOH KK·Filed 2007·Granted Aug 17, 2010·10 cites·11 claims
- 2590US7551864B2Image forming apparatus and method of controlling an image qualityRICOH KK·Filed 2006·Granted Jun 23, 2009·12 cites·20 claims
- 2689US7631639B2Oil separator for blowby gasKOJIMA PRESS KOGYO KK·Filed 2007·Granted Dec 15, 2009·17 cites·8 claims
- 2788US8455851B2Optical sensor and image forming apparatusTANAKA KAYOKO·Filed 2010·Granted Jun 4, 2013·5 cites·15 claims
- 2888US7664413B2Image forming device including a toner pattern forming unitRICOH KK·Filed 2006·Granted Feb 16, 2010·10 cites·7 claims
- 2988US7444107B2Image forming method and apparatus having a unit for conveying toner and carrier particles from a cleaning unit to a developing unitRICOH KK·Filed 2005·Granted Oct 28, 2008·9 cites·25 claims
- 3087US8045874B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2009·Granted Oct 25, 2011·9 cites·19 claims
- 3187US7747182B2Image forming apparatus with toner density controlRICOH KK·Filed 2006·Granted Jun 29, 2010·9 cites·9 claims
- 3287US7480473B2Image formation apparatus and process cartridge including a trickle development system and a cleanerless systemRICOH KK·Filed 2005·Granted Jan 20, 2009·9 cites·19 claims
- 3387US6819901B1Developing method and a developing device for image forming apparatusRICOH KK·Filed 2000·Granted Nov 16, 2004·27 cites·29 claims
- 3486US8235442B2Console lid slide rail attachmentSPITLER NICHOLAS·Filed 2009·Granted Aug 7, 2012·20 cites·19 claims
- 3586US8155543B2Image forming apparatus capable of reducing a lengthy duration of an adjustment controlISHIBASHI HITOSHI·Filed 2006·Granted Apr 10, 2012·10 cites·18 claims
- 3686US6856780B2Method and device for developing a latent image and image forming apparatus using the sameRICOH KK·Filed 2003·Granted Feb 15, 2005·28 cites·66 claims
- 3785US7548704B2Image forming apparatus effectively conducting a process controlRICOH KK·Filed 2007·Granted Jun 16, 2009·8 cites·12 claims
- 3885US6978109B2Image forming apparatusRICOH KK·Filed 2004·Granted Dec 20, 2005·20 cites·24 claims
- 3984US7809322B2Image forming apparatus and process cartridge therefore having a cleaner section which stores unused developerRICOH KK·Filed 2008·Granted Oct 5, 2010·6 cites·11 claims
- 4083US8095025B2Image forming apparatus capable of efficient toner concentration controlISHIBASHI HITOSHI·Filed 2007·Granted Jan 10, 2012·7 cites·20 claims
- 4183US7821677B2Method 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
- 4283US7672602B2Developing unit and image forming apparatus which forces consumption of tonerRICOH KK·Filed 2006·Granted Mar 2, 2010·7 cites·10 claims
- 4382US6823163B2Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrierRICOH KK·Filed 2001·Granted Nov 23, 2004·20 cites·8 claims
- 4481US7103305B2Developing apparatus for image forming apparatusRICOH KK·Filed 2004·Granted Sep 5, 2006·18 cites·10 claims
- 4578US7668471B2Image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Feb 23, 2010·5 cites·16 claims
- 4677US8210592B2Console storage retention structureSPITLER NICHOLAS·Filed 2010·Granted Jul 3, 2012·8 cites·20 claims
- 4776US8238768B2Image forming apparatus including developing unit and toner supplying unitKOIZUMI EICHI·Filed 2009·Granted Aug 7, 2012·5 cites·16 claims
- 4876US7929873B2Image forming apparatus and image density control methodRICOH CO LTD·Filed 2008·Granted Apr 19, 2011·5 cites·15 claims
- 4976US7809291B2Image 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
- 5073US8180261B2Image forming apparatus including a developer replenishing device which uses an air feeding device for a two-ingredient type developerMURAMATSU SATOSHI·Filed 2009·Granted May 15, 2012·3 cites·8 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →