Inventor · disambiguated record
Yoshinori Hayashi
Also filed as: HAYASHI YOSHINORI
208 granted patents·15 pending applications·4,716 citations·filing 1979–2024
99Inventor score
Top patents by PatentIndex Score
223 records- 0199US7218432B2Optical scanning apparatus and image forming apparatusRICOH KK·Filed 2006·Granted May 15, 2007·97 cites·8 claims
- 0299US6400391B1Optical scanning lens, optical scanning device and image forming apparatusRICOH KK·Filed 2000·Granted Jun 4, 2002·132 cites·48 claims
- 0397US7417777B2Optical scanning device and image forming apparatusRICOH KK·Filed 2007·Granted Aug 26, 2008·42 cites·11 claims
- 0497US6657765B2Optical deflecting unit, optical scanning unit, image forming apparatus, and method of producing optical unitRICOH KK·Filed 2002·Granted Dec 2, 2003·113 cites·24 claims
- 0596US8089498B2Surface-emission laser array, optical scanning apparatus apparatus and image forming apparatusSATO SHUNICHI·Filed 2007·Granted Jan 3, 2012·30 cites·8 claims
- 0696US7253937B2Multi-beam optical scanning device and image forming apparatusRICOH KK·Filed 2006·Granted Aug 7, 2007·59 cites·18 claims
- 0796US6977762B2Optical scanning device decreasing amount of change in relative scanning positionRICOH KK·Filed 2005·Granted Dec 20, 2005·20 cites·17 claims
- 0896US6906739B2Optical scanner and imaging apparatus using the sameRICOH KK·Filed 2003·Granted Jun 14, 2005·65 cites·8 claims
- 0996US6771407B2Optical scanner and image formation apparatusRICOH KK·Filed 2002·Granted Aug 3, 2004·82 cites·5 claims
- 1096US6462853B2Optical scanning deviceRICOH KK·Filed 2001·Granted Oct 8, 2002·97 cites·4 claims
- 1196US6081386AOptical scanning lens, optical scanning and imaging system and optical scanning apparatus incorporating sameRICOH KK·Filed 1998·Granted Jun 27, 2000·155 cites·27 claims
- 1295US8508567B2Surface-emission laser array, optical scanning apparatus and image forming apparatusSATO SHUNICHI·Filed 2011·Granted Aug 13, 2013·20 cites·4 claims
- 1395US7271824B2Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparatus, and method for generating pixel clocksRICOH KK·Filed 2002·Granted Sep 18, 2007·83 cites·35 claims
- 1495US7164516B2Optical scanner and image forming apparatusRICOH KK·Filed 2006·Granted Jan 16, 2007·44 cites·10 claims
- 1595US7154651B2Optical scanning device and imaging apparatus implementing the sameRICOH KK·Filed 2005·Granted Dec 26, 2006·40 cites·11 claims
- 1695US7145705B2Optical scanner and image forming apparatusRICOH KK·Filed 2004·Granted Dec 5, 2006·57 cites·14 claims
- 1795US7110016B2Optical scanner and imaging apparatus using the sameRICOH KK·Filed 2005·Granted Sep 19, 2006·20 cites·2 claims
- 1895US7106483B2Optical scanner and image forming apparatusRICOH KK·Filed 2004·Granted Sep 12, 2006·71 cites·6 claims
- 1995US7072127B2Optical scanning lens, optical scanning device and image forming apparatusRICOH KK·Filed 2005·Granted Jul 4, 2006·17 cites·20 claims
- 2095US7006120B2Multi-beam optical scanning apparatus and image forming apparatusRICOH KK·Filed 2003·Granted Feb 28, 2006·65 cites·33 claims
- 2195US6987593B2Optical scanning device and image forming apparatus using the sameRICOH KK·Filed 2003·Granted Jan 17, 2006·64 cites·11 claims
- 2295US6587245B2Optical scanning device, optical scanning method, and image forming apparatusRICOH KK·Filed 2001·Granted Jul 1, 2003·59 cites·216 claims
- 2395US6222662B1Optical scanning device and a scanning lens thereforRICOH KK·Filed 2000·Granted Apr 24, 2001·81 cites·12 claims
- 2494US10291110B2Driving circuit for switching element and power conversion systemDENSO CORP·Filed 2017·Granted May 14, 2019·8 cites·31 claims
- 2594US7626744B2Optical scanning device and image forming apparatusRICOH KK·Filed 2008·Granted Dec 1, 2009·24 cites·20 claims
- 2694US7545547B2Scanning unit and image forming apparatusRICOH KK·Filed 2007·Granted Jun 9, 2009·37 cites·10 claims
- 2794US7068296B2Optical scanning device for reducing a dot position displacement at a joint of scanning linesRICOH KK·Filed 2002·Granted Jun 27, 2006·80 cites·12 claims
- 2894US6317246B1Multi-beam scanning apparatusRICOH KK·Filed 2000·Granted Nov 13, 2001·68 cites·15 claims
- 2993US7710445B2Light source unit, optical scan apparatus, and image formation apparatusRICOH KK·Filed 2008·Granted May 4, 2010·14 cites·19 claims
- 3093US7495813B2Optical scanning device and image forming apparatusRICOH KK·Filed 2006·Granted Feb 24, 2009·14 cites·22 claims
- 3193US7443558B2Optical scanning device and image forming apparatusRICOH KK·Filed 2007·Granted Oct 28, 2008·29 cites·10 claims
- 3293US7236281B2Optical scanner and image forming apparatusRICOH KK·Filed 2004·Granted Jun 26, 2007·52 cites·10 claims
- 3393US6788444B2Method and apparatus for optical scanning capable of reducing a dot position displacement and a dot diameter variationRICOH KK·Filed 2002·Granted Sep 7, 2004·69 cites·18 claims
- 3493US6744545B2Optical scanning lens, optical scanning device and image forming apparatusRICOH KK·Filed 2002·Granted Jun 1, 2004·37 cites·55 claims
- 3593US6185026B1Multi-beam scanning apparatusRICOH KK·Filed 1999·Granted Feb 6, 2001·111 cites·18 claims
- 3693US5875051AOptical scanning device and a scanning lens thereforRICOH KK·Filed 1996·Granted Feb 23, 1999·118 cites·8 claims
- 3793US4983916ACompact magnetic encoderYAMAHA CORP·Filed 1989·Granted Jan 8, 1991·72 cites·2 claims
- 3892US7800805B2Optical Scanning apparatus and image forming apparatusRICOH KK·Filed 2007·Granted Sep 21, 2010·17 cites·18 claims
- 3992US7672032B2Optical scanner and image forming apparatus using optical scannerRICOH KK·Filed 2007·Granted Mar 2, 2010·27 cites·18 claims
- 4092US7397591B2Optical scanner and image forming apparatusRICOH KK·Filed 2007·Granted Jul 8, 2008·21 cites·2 claims
- 4192US7362486B2Optical scanning device with at least one resin lens for controlling a beam waist position shiftRICOH KK·Filed 2005·Granted Apr 22, 2008·28 cites·16 claims
- 4292US7298537B2Optical scanner and image forming apparatusRICOH KK·Filed 2006·Granted Nov 20, 2007·20 cites·2 claims
- 4392US7271823B2Optical scanner and image forming apparatusRICOH KK·Filed 2004·Granted Sep 18, 2007·61 cites·5 claims
- 4492US6757089B2Optical scanning device having a deflection mirror to scan a scanned surface at a constant velocity via a light beam to obtain a large effective write widthRICOH KK·Filed 2001·Granted Jun 29, 2004·57 cites·8 claims
- 4592US6125251AImage forming device having internal access capabilitySHARP KK·Filed 1999·Granted Sep 26, 2000·58 cites·21 claims
- 4692US6069724AOptical scanning lens and optical scanning apparatusRICOH KK·Filed 1998·Granted May 30, 2000·120 cites·18 claims
- 4791US11848599B2Drive circuit for driving an upper arm switch and a lower arm switch each having a body diodeDENSO CORP·Filed 2020·Granted Dec 19, 2023·3 cites·2 claims
- 4891US7800641B2Light source unit, optical scan apparatus, and image formation apparatusRICOH KK·Filed 2008·Granted Sep 21, 2010·12 cites·7 claims
- 4991US7663657B2Optical scanning device and image forming apparatusRICOH KK·Filed 2007·Granted Feb 16, 2010·26 cites·6 claims
- 5091US6573921B2Optical scanning device and image forming apparatus using the optical scanning deviceRICOH KK·Filed 2002·Granted Jun 3, 2003·40 cites·18 claims
Showing the top 50 of 223 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →