Inventor · disambiguated record
Toshihiro Sugiyama
Also filed as: SUGIYAMA TOSHIHIRO
42 granted patents·4 pending applications·1,467 citations·filing 1990–2015
98Inventor score
Top patents by PatentIndex Score
46 records- 0196US6112046AImage forming apparatus having recycling of residual tonerRICOH KK·Filed 1998·Granted Aug 29, 2000·141 cites·67 claims
- 0296US5617191AToner conveyor roller and image forming apparatus having the sameRICOH KK·Filed 1995·Granted Apr 1, 1997·84 cites·11 claims
- 0395US6033818ADeveloping device for an image forming apparatusRICOH KK·Filed 1998·Granted Mar 7, 2000·53 cites·9 claims
- 0495US5845183ADeveloping device for an image forming apparatusRICOH KK·Filed 1997·Granted Dec 1, 1998·52 cites·9 claims
- 0595US5708942ADeveloping device for an image forming apparatusRICOH KK·Filed 1996·Granted Jan 13, 1998·53 cites·4 claims
- 0695US5625441ADeveloping device for an image forming apparatusRICOH KK·Filed 1996·Granted Apr 29, 1997·54 cites·9 claims
- 0794US5826144ADeveloping device for an electrophotographic recording apparatus including bias control of a toner supplying rollerRICOH KK·Filed 1996·Granted Oct 20, 1998·68 cites·7 claims
- 0894US5489747ADeveloping device for an image forming apparatusRICOH KK·Filed 1995·Granted Feb 6, 1996·73 cites·3 claims
- 0993US5697026ADeveloping device having the lengths of two toner transporting rollers and an image bearing member in specific relationshipsRICOH KK·Filed 1995·Granted Dec 9, 1997·62 cites·19 claims
- 1093US5625440ADeveloping device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scatteringRICOH KK·Filed 1995·Granted Apr 29, 1997·64 cites·9 claims
- 1192US7734200B2Lifetime management device and image forming systemRICOH KK·Filed 2006·Granted Jun 8, 2010·15 cites·19 claims
- 1292US5768665AImage forming apparatus with bias control to prevent undesirable toner depositionRICOH KK·Filed 1996·Granted Jun 16, 1998·58 cites·14 claims
- 1392US5666625ADevice for electrostatically developing a latent image on an image carrierRICOH KK·Filed 1995·Granted Sep 9, 1997·62 cites·4 claims
- 1491US7676164B2Lifetime management device and image forming systemRICOH KK·Filed 2006·Granted Mar 9, 2010·13 cites·7 claims
- 1591US7593652B2Image forming apparatus and image forming system that calculate operation amount of components thereofRICOH KK·Filed 2006·Granted Sep 22, 2009·13 cites·12 claims
- 1691US5879752AMethod of coating a toner conveyor rollerRICOH KK·Filed 1996·Granted Mar 9, 1999·62 cites·18 claims
- 1791US5689782ADeveloping apparatus for electronic photographic recording equipment, having two developer transfer rollersRICOH KK·Filed 1995·Granted Nov 18, 1997·64 cites·10 claims
- 1891US5625438AToner, and devices for electrostatically depositing a uniform application thereofRICOH KK·Filed 1995·Granted Apr 29, 1997·40 cites·8 claims
- 1991US5486909ADeveloping device for an image forming apparatusRICOH KK·Filed 1995·Granted Jan 23, 1996·56 cites·2 claims
- 2091US5289241ADeveloping unit for an image forming apparatus having adjoining fresh and waste toner containersRICOH KK·Filed 1992·Granted Feb 22, 1994·44 cites·8 claims
- 2191US5287151ADeveloping device for an image forming apparatus using a dry developerRICOH KK·Filed 1992·Granted Feb 15, 1994·44 cites·10 claims
- 2290US5552870ADeveloping device for an image forming apparatusRICOH KK·Filed 1994·Granted Sep 3, 1996·39 cites·17 claims
- 2389US5897243AElectrophotographic recording apparatus configured to switch a bias voltage in a developing unitRICOH KK·Filed 1996·Granted Apr 27, 1999·49 cites·18 claims
- 2488US7817953B2Image recording medium, sheet feeding device, and image forming apparatusRICOH KK·Filed 2007·Granted Oct 19, 2010·11 cites·13 claims
- 2588US5196884AApparatus having a plurality of replaceable partsRICOH KK·Filed 1990·Granted Mar 23, 1993·37 cites·2 claims
- 2685US6700595B2Image forming apparatus with accurate image formationRICOH KK·Filed 2002·Granted Mar 2, 2004·24 cites·12 claims
- 2780US6813467B2Image forming apparatusRICOH KK·Filed 2003·Granted Nov 2, 2004·15 cites·61 claims
- 2877US6895209B2Cleaning device and image forming apparatus using the sameRICOH KK·Filed 2003·Granted May 17, 2005·15 cites·20 claims
- 2969US5610693ADeveloping device for an image forming apparatusRICOH KK·Filed 1994·Granted Mar 11, 1997·16 cites·35 claims
- 3068US6430383B1Image transferring device and image forming apparatus including the sameRICOH KK·Filed 2000·Granted Aug 6, 2002·10 cites·14 claims
- 3166US7883089B2Image forming apparatusRICOH CO LTD·Filed 2007·Granted Feb 8, 2011·3 cites·7 claims
- 3266US5223668ASingle component developing device with velocity of roller dependent on time constant of circuit formed by resistor layer of developer carrying member and photosensitive drumRICOH KK·Filed 1990·Granted Jun 29, 1993·18 cites·10 claims
- 3365US9229399B2Image forming apparatus and method having a forcible toner consumption processKAMIHARA KAZUAKI·Filed 2014·Granted Jan 5, 2016·1 cites·20 claims
- 3464US6961535B2Image forming apparatusRICOH KK·Filed 2004·Granted Nov 1, 2005·7 cites·6 claims
- 3563US7865121B2Image forming apparatus and recording mediumRICOH CO LTD·Filed 2007·Granted Jan 4, 2011·2 cites·9 claims
- 3656US6113187AFolding seat for vehicleTOYOTA AUTO BODY CO LTD·Filed 1998·Granted Sep 5, 2000·33 cites·13 claims
- 3753US9102277B2Storage structure for vehicleTOYOTA BOSHOKU KK·Filed 2014·Granted Aug 11, 2015·3 cites·5 claims
- 3852US6421511B2Transfer device and image formation apparatusRICOH KK·Filed 2000·Granted Jul 16, 2002·5 cites·20 claims
- 3951US6532355B2Toner recycling device and method, and image forming apparatus and method using the toner recycling deviceRICOH KK·Filed 2001·Granted Mar 11, 2003·4 cites·38 claims
- 4044US9457690B2Seat apparatus for vehicleAISIN SEIKI·Filed 2014·Granted Oct 4, 2016·0 cites·4 claims
- 4143US2005162499A1Image forming deviceFiled 2005·Application pending·0 cites
- 4242US7965954B2Image forming apparatusRICOH CO LTD·Filed 2007·Granted Jun 21, 2011·0 cites·8 claims
- 4340US2008135160A1Sheet processing method and image forming apparatusIWASAKI YUKIKO·Filed 2007·Application pending·0 cites
- 4439US2008025774A1Image forming method and apparatusISHIBASHI MIKIO·Filed 2007·Application pending·0 cites
- 4538US2008236736A1Image Forming Apparatus, Image Forming System, Paper Feeding Apparatus, Image Recording Medium, And Method Of Manufacturing Image Recording MediumNAKAMURA REKI·Filed 2007·Application pending·0 cites
- 4630US9500978B2Image forming apparatus including electric charge removing device and method of forming imageNAKAYAMA MASAYOSHI·Filed 2015·Granted Nov 22, 2016·0 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →