Inventor · disambiguated record
Yasuyuki Ishiguro
Also filed as: ISHIGURO YASUYUKI
53 granted patents·11 pending applications·591 citations·filing 1986–2018
98Inventor score
Top patents by PatentIndex Score
64 records- 0197US8095049B2Toner cartridge and image forming apparatus using the sameISHIGURO YASUYUKI·Filed 2009·Granted Jan 10, 2012·38 cites·12 claims
- 0296US6792217B2Use status detecting mechanism and image-producing unitSHARP KK·Filed 2003·Granted Sep 14, 2004·66 cites·9 claims
- 0391US7542704B2Toner carrier apparatus, toner feeding apparatus, and image forming apparatusSHARP KK·Filed 2007·Granted Jun 2, 2009·12 cites·14 claims
- 0491US5142335AElectrostatic latent image-developing device and toner cartridge used thereforMITA INDUSTRIAL CO LTD·Filed 1991·Granted Aug 25, 1992·43 cites·24 claims
- 0590US8270882B2Developing device and image forming apparatus using the sameMIHARA KOICHI·Filed 2010·Granted Sep 18, 2012·6 cites·7 claims
- 0689US6385422B1Developing unit equipped with a toner replenishing device configured with a conveying sheet and rotatorSHARP KK·Filed 2000·Granted May 7, 2002·34 cites·16 claims
- 0788US6421517B1Toner supply device with rotatable agitating elementSHARP KK·Filed 2001·Granted Jul 16, 2002·31 cites·28 claims
- 0887US7395015B2Toner transport device, toner supply device, and image forming apparatusSHARP KK·Filed 2006·Granted Jul 1, 2008·9 cites·15 claims
- 0985US4730205AToner collecting apparatusMITA INDUSTRIAL CO LTD·Filed 1986·Granted Mar 8, 1988·29 cites·8 claims
- 1084US6226490B1Toner replenishing apparatus and image forming apparatus equipped with sameSHARP KK·Filed 1999·Granted May 1, 2001·36 cites·16 claims
- 1181US8417160B2Toner cartridge including a toner flowing-out preventing valveISHIGURO YASUYUKI·Filed 2010·Granted Apr 9, 2013·3 cites·4 claims
- 1281US8412077B2Developing device and image forming apparatus using the sameISHIGURO YASUYUKI·Filed 2010·Granted Apr 2, 2013·3 cites·5 claims
- 1381US6035168ADeveloping device having a reduced width in the horizontal directionSHARP KK·Filed 1998·Granted Mar 7, 2000·32 cites·12 claims
- 1480US7925182B2Image forming apparatusSHARP KK·Filed 2008·Granted Apr 12, 2011·6 cites·9 claims
- 1580US6360066B1Developing apparatus having stirring shafts with elliptic stirring vanesSHARP KK·Filed 2000·Granted Mar 19, 2002·19 cites·8 claims
- 1679US6415126B2Developing unit with agitator and conveying sheet for tonerSHARP KK·Filed 2001·Granted Jul 2, 2002·18 cites·9 claims
- 1779US5621507AElectrostatic latent image-developing device and toner cartridge used thereforMITA INDUSTRIAL CO LTD·Filed 1994·Granted Apr 15, 1997·21 cites·11 claims
- 1878US7805096B2Toner conveying device, toner supply device and image forming apparatus using theseSHARP KK·Filed 2007·Granted Sep 28, 2010·5 cites·11 claims
- 1976US8730494B2Image forming apparatus including display deviceISHIGURO YASUYUKI·Filed 2011·Granted May 20, 2014·3 cites·9 claims
- 2075US7020416B2Image forming apparatus with arrangement for controlling assembly orderSHARP KK·Filed 2003·Granted Mar 28, 2006·15 cites·11 claims
- 2173US7263317B2Particle discharge apparatus and image forming apparatusSHARP KK·Filed 2005·Granted Aug 28, 2007·4 cites·14 claims
- 2272US7502576B2Development apparatus for mixing recycled developer with toner in a toner supply path and image forming apparatus having sameSHARP KK·Filed 2005·Granted Mar 10, 2009·4 cites·3 claims
- 2370US7627274B2Toner conveying device, toner supply device and image forming apparatus using theseSHARP KK·Filed 2007·Granted Dec 1, 2009·3 cites·20 claims
- 2469US7177577B2Particles supply apparatus and image forming apparatusSHARP KK·Filed 2005·Granted Feb 13, 2007·3 cites·12 claims
- 2569USD462712SToner cartridgeSHARP KK·Filed 2001·Granted Sep 10, 2002·16 cites·1 claims
- 2668US7505711B2Waste developer collecting device and image forming apparatus provided therewithSHARP KK·Filed 2005·Granted Mar 17, 2009·3 cites·8 claims
- 2768US7440717B2Developing apparatus and image forming apparatus with toner supply portion opening/closing mechanismSHARP KK·Filed 2006·Granted Oct 21, 2008·3 cites·4 claims
- 2868US4806981ACleaning unit in electrophotographic copierMITA INDUSTRIAL CO LTD·Filed 1987·Granted Feb 21, 1989·15 cites·7 claims
- 2966US8532523B2Toner cartridge having a toner flowing-out preventing member and image forming apparatus using the sameISHIGURO YASUYUKI·Filed 2010·Granted Sep 10, 2013·1 cites·4 claims
- 3066US6272298B1Developer cartridgeSHARP KK·Filed 2000·Granted Aug 7, 2001·10 cites·12 claims
- 3165US5671476AImage forming machine with cleaning drum brush driven by rotating drumMITA INDUSTRIAL CO LTD·Filed 1996·Granted Sep 23, 1997·17 cites·7 claims
- 3265US4860056ASealable toner recovery box for an image forming machineMITA INDUSTRIAL CO LTD·Filed 1987·Granted Aug 22, 1989·14 cites·8 claims
- 3363US7756450B2Toner transport device and image forming apparatusSHARP KK·Filed 2007·Granted Jul 13, 2010·2 cites·7 claims
- 3462US7526236B2Waste developer collecting device, image forming apparatus, and waste developer collecting methodSHARP KK·Filed 2006·Granted Apr 28, 2009·2 cites·27 claims
- 3562US6741822B2Image forming apparatus with members for holding a cartridgeSHARP KK·Filed 2002·Granted May 25, 2004·8 cites·4 claims
- 3660US6853821B2Image forming device and toner deviceSHARP KK·Filed 2003·Granted Feb 8, 2005·8 cites·4 claims
- 3758US2012179579A1Consumable supply-ordering system and image forming apparatus and consumable supply-ordering method using the sameKUNIHIRO HISASHI·Filed 2012·Application pending·0 cites
- 3856US9992369B2Image forming apparatus having display section displaying environmental certification information during startup and being foldable into a generally flush accommodated stateSHARP KK·Filed 2017·Granted Jun 5, 2018·0 cites·10 claims
- 3956US7860432B2Toner conveyance unit and image forming apparatusSHARP KK·Filed 2008·Granted Dec 28, 2010·1 cites·9 claims
- 4055US2015363147A1Communication system, image forming apparatus, and communication methodSHARP KK·Filed 2015·Application pending·0 cites
- 4154US2012182574A1Communication system, image forming apparatus, and communication methodKUNIHIRO HISASHI·Filed 2011·Application pending·0 cites
- 4254US2015262285A1Consumable supply-ordering system and image forming apparatus and consumable supply-ordering method using the sameSHARP KK·Filed 2015·Application pending·0 cites
- 4353US9152967B2Image forming apparatus, consumables ordering system and consumables ordering methodISHIGURO YASUYUKI·Filed 2012·Granted Oct 6, 2015·0 cites·7 claims
- 4453US7283755B2Remaining toner detection apparatus and image forming apparatus provided with sameSHARP KK·Filed 2004·Granted Oct 16, 2007·5 cites·13 claims
- 4552US2009285505A1Image processing method, image processing apparatus, and image forming apparatusMIHARA KOICHI·Filed 2009·Application pending·0 cites
- 4652US2012162690A1Image forming apparatusISHIGURO YASUYUKI·Filed 2011·Application pending·0 cites
- 4750US6347207B1Developing unit and toner replenishing device with conveying apparatusSHARP KK·Filed 1999·Granted Feb 12, 2002·9 cites·14 claims
- 4849US8238797B2Toner cartridge and image forming apparatus using the sameISHIGURO YASUYUKI·Filed 2010·Granted Aug 7, 2012·0 cites·12 claims
- 4949US5136341AImage forming apparatus having means for coordinating the input and discharge of copy paperMITA INDUSTRIAL CO LTD·Filed 1989·Granted Aug 4, 1992·8 cites·7 claims
- 5047US8731441B2Charging roller and image forming apparatusISHIGURO YASUYUKI·Filed 2011·Granted May 20, 2014·0 cites·5 claims
Showing the top 50 of 64 patent records by PatentIndex Score.
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