Inventor · disambiguated record
Yoshiki Yamaguchi
Also filed as: YAMAGUCHI YOSHIKI
127 granted patents·9 pending applications·646 citations·filing 1988–2025
99Inventor score
Top patents by PatentIndex Score
136 records- 0199US7702271B2Fixing device, and image forming apparatus using the fixing deviceRICOH KK·Filed 2008·Granted Apr 20, 2010·61 cites·35 claims
- 0299US7437111B2Fixing device, and image forming apparatus using the fixing deviceRICOH KK·Filed 2005·Granted Oct 14, 2008·73 cites·35 claims
- 0396US8588670B2Fixing device having a reflector and image forming apparatus incorporating sameSHIMOKAWA TOSHIHIKO·Filed 2011·Granted Nov 19, 2013·17 cites·8 claims
- 0495US8219016B2Fixing device and image forming apparatus incorporating sameHASEGAWA KENICHI·Filed 2010·Granted Jul 10, 2012·13 cites·19 claims
- 0595US8023861B2Fixing device and image-forming apparatus comprising the sameRICOH CO LTD·Filed 2008·Granted Sep 20, 2011·21 cites·9 claims
- 0694US8725038B2Belt assembly, fixing device, and image forming apparatus incorporating sameYAMAGUCHI YOSHIKI·Filed 2011·Granted May 13, 2014·10 cites·18 claims
- 0794US8364052B2Fixing device and image forming apparatus incorporating sameRICOH CO LTD·Filed 2010·Granted Jan 29, 2013·10 cites·7 claims
- 0894US5196910ASemiconductor memory device with recessed array regionHITACHI LTD·Filed 1991·Granted Mar 23, 1993·108 cites·21 claims
- 0993US9316964B2Fixing device and image forming apparatusYAMAGUCHI YOSHIKI·Filed 2015·Granted Apr 19, 2016·6 cites·18 claims
- 1093US8630572B2Fixing device and image forming apparatus including sameFUJIMOTO IPPEI·Filed 2011·Granted Jan 14, 2014·9 cites·10 claims
- 1193US8447220B2Fixing device and image forming apparatus including sameYAMAGUCHI YOSHIKI·Filed 2011·Granted May 21, 2013·8 cites·12 claims
- 1292US9046838B2Fixing device and image forming apparatusARAI YUJI·Filed 2013·Granted Jun 2, 2015·6 cites·23 claims
- 1392US8498561B2Fixing device and image forming apparatus incorporating same having a reinforcing member including first and second flangesYAMAGUCHI YOSHIKI·Filed 2010·Granted Jul 30, 2013·7 cites·13 claims
- 1492US4882289AMethod of making a semiconductor memory device with recessed array regionHITACHI LTD·Filed 1988·Granted Nov 21, 1989·85 cites·7 claims
- 1591US8682192B2Image forming apparatusIKEBUCHI YUTAKA·Filed 2011·Granted Mar 25, 2014·6 cites·7 claims
- 1691US8311469B2Fixing device and image forming apparatus incorporating sameYOSHIKAWA MASAAKI·Filed 2010·Granted Nov 13, 2012·7 cites·8 claims
- 1790US10845740B2Temperature detector, heating device, fixing device, and image forming apparatusFURUICHI YUUSUKE·Filed 2019·Granted Nov 24, 2020·3 cites·20 claims
- 1890US8385804B2Fixing device and image forming apparatus employing the fixing deviceRICOH CO LTD·Filed 2010·Granted Feb 26, 2013·6 cites·13 claims
- 1990US8213827B2Fixing device, image forming apparatus incorporating same, and fixing methodSHINSHI AKIRA·Filed 2010·Granted Jul 3, 2012·6 cites·9 claims
- 2089US8655211B2Fixing device and image forming apparatus incorporating sameFUJIMOTO IPPEI·Filed 2011·Granted Feb 18, 2014·5 cites·16 claims
- 2188US8737878B2Image forming apparatus including removable fixing deviceYAMAGUCHI YOSHIKI·Filed 2011·Granted May 27, 2014·5 cites·5 claims
- 2288US8406647B2Fixing device including a radiation member to cool a fixing member and a heat conductive memberSHINSHI AKIRA·Filed 2010·Granted Mar 26, 2013·5 cites·8 claims
- 2387US9389550B2Fixing device, image forming apparatus, and fixing methodSAITO KAZUYA·Filed 2014·Granted Jul 12, 2016·4 cites·20 claims
- 2487US8437675B2Fixing device and image forming apparatus incorporating same having a laminated heater with a flexible heat generation sheetISHII KENJI·Filed 2010·Granted May 7, 2013·5 cites·14 claims
- 2586US8676101B2Fixing device having metal pipe with rough section and image forming apparatus incorporating sameYOSHIKAWA MASAAKI·Filed 2010·Granted Mar 18, 2014·4 cites·7 claims
- 2686US8401448B2Fixing device and image forming apparatus incorporating sameYAMAGUCHI YOSHIKI·Filed 2010·Granted Mar 19, 2013·4 cites·19 claims
- 2785US8655246B2Fixing device and image forming apparatus incorporating sameTOKUDA TETSUO·Filed 2011·Granted Feb 18, 2014·4 cites·17 claims
- 2884US9221661B2Pressure adjuster, fixing device, and image forming apparatusMIMBU RYUUICHI·Filed 2014·Granted Dec 29, 2015·3 cites·20 claims
- 2984US9152106B2Fixing device and image forming apparatus including sameYAMAGUCHI YOSHIKI·Filed 2013·Granted Oct 6, 2015·3 cites·16 claims
- 3083US9176440B2Fixing device and image forming apparatusHONDA HARUYUKI·Filed 2014·Granted Nov 3, 2015·3 cites·21 claims
- 3183US9128426B2Fixing device and image forming apparatus including sameRICOH CO LTD·Filed 2013·Granted Sep 8, 2015·2 cites·18 claims
- 3282US9529308B2Image forming apparatus and image forming methodRICOH CO LTD·Filed 2015·Granted Dec 27, 2016·2 cites·17 claims
- 3382US9501006B2Fixing device, image forming apparatus, and fixing methodSHIMOKAWA TOSHIHIKO·Filed 2015·Granted Nov 22, 2016·2 cites·13 claims
- 3482US8903296B2Fixing device and image forming apparatus incorporating sameSHIMOKAWA TOSHIHIKO·Filed 2011·Granted Dec 2, 2014·3 cites·8 claims
- 3582US8682218B2Fixing device and image forming apparatus incorporating sameYAMAGUCHI YOSHIKI·Filed 2011·Granted Mar 25, 2014·3 cites·8 claims
- 3682US8655244B2Fixing device and image forming apparatus incorporating sameHASEGAWA KENICHI·Filed 2010·Granted Feb 18, 2014·3 cites·13 claims
- 3782US8472855B2Fixing device and image forming apparatus incorporating sameSHINSHI AKIRA·Filed 2011·Granted Jun 25, 2013·3 cites·11 claims
- 3882US8428502B2Belt-type fixing device and image forming apparatus using sameTOKUDA TETSUO·Filed 2010·Granted Apr 23, 2013·3 cites·12 claims
- 3982US8391743B2Fixing device and image forming apparatus incorporating sameYAMAGUCHI YOSHIKI·Filed 2010·Granted Mar 5, 2013·3 cites·17 claims
- 4081US8583020B2Fixing device and image forming apparatus incorporating sameYOSHIKAWA MASAAKI·Filed 2011·Granted Nov 12, 2013·3 cites·10 claims
- 4181US8463168B2Fixing device and image forming apparatus including sameFUJIMOTO IPPEI·Filed 2010·Granted Jun 11, 2013·2 cites·21 claims
- 4281US8401414B2Fixing device and image forming apparatus incorporating sameYOSHIKAWA MASAAKI·Filed 2010·Granted Mar 19, 2013·3 cites·16 claims
- 4380US10942475B2Fixing device and image forming apparatus including nip former of specific surface roughnessFUJIMOTO IPPEI·Filed 2020·Granted Mar 9, 2021·1 cites·10 claims
- 4479US11054774B2Nip forming member, fixing device, and image forming apparatusTAKAHASHI YOSHIHARU·Filed 2020·Granted Jul 6, 2021·1 cites·6 claims
- 4579US10962908B2Heating device, fixing device, and image forming apparatusYAMAGUCHI YOSHIKI·Filed 2020·Granted Mar 30, 2021·1 cites·13 claims
- 4678US8886090B2Fixing device including an engagement-disengagement unit and image forming apparatus equipped with the fixing deviceKAWATA TEPPEI·Filed 2012·Granted Nov 11, 2014·2 cites·20 claims
- 4777US9599941B2Heater for heating a fixing rotator of a fixing device and image forming apparatus incorporating the sameYAMAGUCHI YOSHIKI·Filed 2014·Granted Mar 21, 2017·2 cites·18 claims
- 4877US8873984B2Fixing device, image forming apparatus incorporating same, and fixing methodISHII KENJI·Filed 2013·Granted Oct 28, 2014·2 cites·20 claims
- 4977US8600276B2Heat conduction unit, fixing device, and image forming apparatusISHII KENJI·Filed 2011·Granted Dec 3, 2013·2 cites·14 claims
- 5076US9557692B2Fixing device and image forming apparatusIMADA TAKAHIRO·Filed 2015·Granted Jan 31, 2017·1 cites·12 claims
Showing the top 50 of 136 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →