Inventor · disambiguated record
Yasunori Ishigaya
Also filed as: ISHIGAYA YASUNORI
59 granted patents·8 pending applications·192 citations·filing 2008–2024
98Inventor score
Top patents by PatentIndex Score
67 records- 0197US7912392B2Image forming apparatus with glossy image printing modeRICOH CO LTD·Filed 2008·Granted Mar 22, 2011·31 cites·18 claims
- 0296US9122212B2Fixing device and image forming apparatus including sameFUJIMOTO IPPEI·Filed 2014·Granted Sep 1, 2015·16 cites·6 claims
- 0396US8064798B2Fixing device and image forming apparatus with heating member heated uniformly in circumferential directionSHINSHI AKIRA·Filed 2009·Granted Nov 22, 2011·24 cites·16 claims
- 0495US8160484B2Fixing device and image forming apparatus incorporating sameHASEGAWA KENICHI·Filed 2009·Granted Apr 17, 2012·19 cites·18 claims
- 0594US9069302B2Fixing device and image forming apparatus including sameSAMEI MASAHIRO·Filed 2014·Granted Jun 30, 2015·11 cites·9 claims
- 0694US8606135B2Fixing device and image forming apparatus employing the fixing deviceYAMASHINA RYOTA·Filed 2010·Granted Dec 10, 2013·10 cites·18 claims
- 0793US9316964B2Fixing device and image forming apparatusYAMAGUCHI YOSHIKI·Filed 2015·Granted Apr 19, 2016·6 cites·18 claims
- 0893US9031439B2Fixing device and image forming deviceHASE TAKAMASA·Filed 2013·Granted May 12, 2015·7 cites·7 claims
- 0992US11971674B2Heating device, fixing device, and image forming apparatusNANNO SHIGEO·Filed 2022·Granted Apr 30, 2024·2 cites·20 claims
- 1092US8073352B2Image forming apparatus, and method of controlling warming-up time of image forming apparatusKUNII HIROYUKI·Filed 2008·Granted Dec 6, 2011·21 cites·15 claims
- 1191US9804546B2Fixing device and image forming apparatusSAITO KAZUYA·Filed 2016·Granted Oct 31, 2017·5 cites·18 claims
- 1288US10852671B2Fixing device including a cleaner to clean a surface of a cleaning target and image forming apparatus incorporating sameIMADA TAKAHIRO·Filed 2019·Granted Dec 1, 2020·3 cites·19 claims
- 1386US8682237B2Fixing device and image forming apparatus including sameISHIGAYA YASUNORI·Filed 2013·Granted Mar 25, 2014·3 cites·3 claims
- 1483US9176440B2Fixing device and image forming apparatusHONDA HARUYUKI·Filed 2014·Granted Nov 3, 2015·3 cites·21 claims
- 1582US9529308B2Image forming apparatus and image forming methodRICOH CO LTD·Filed 2015·Granted Dec 27, 2016·2 cites·17 claims
- 1682US9501006B2Fixing device, image forming apparatus, and fixing methodSHIMOKAWA TOSHIHIKO·Filed 2015·Granted Nov 22, 2016·2 cites·13 claims
- 1782US9341999B2Image forming apparatus which adjusts a time interval between successive recording media and the changing time at which the time interval is changedSESHITA TAKUYA·Filed 2015·Granted May 17, 2016·2 cites·16 claims
- 1881US10067449B2Fixing device and image forming apparatusMATSUDA RYOHEI·Filed 2016·Granted Sep 4, 2018·2 cites·24 claims
- 1981US8571456B2Fixing device and image forming apparatus incorporating sameSAMEI MASAHIRO·Filed 2011·Granted Oct 29, 2013·3 cites·20 claims
- 2078US8275278B2Fixing control device, fixing device, and image forming apparatusISHIGAYA YASUNORI·Filed 2009·Granted Sep 25, 2012·5 cites·19 claims
- 2177US9599941B2Heater 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
- 2276US8744330B2Fixing device having a plurality of heat sources and a plurality of temperature detectors and image forming apparatus including sameYOSHINAGA HIROSHI·Filed 2011·Granted Jun 3, 2014·2 cites·22 claims
- 2376US8699896B2Failure predictor, fixing device, image forming apparatus, and failure prediction systemISHIGAYA YASUNORI·Filed 2010·Granted Apr 15, 2014·2 cites·3 claims
- 2474US2024248427A1Heating device, fixing device, and image forming apparatusRICOH CO LTD·Filed 2024·Application pending·0 cites
- 2573US10012932B2Image forming apparatus incorporating fixing deviceISHIGAYA YASUNORI·Filed 2017·Granted Jul 3, 2018·1 cites·12 claims
- 2671US11934126B2Heating device, fixing device, and image forming apparatusISHIGAYA YASUNORI·Filed 2022·Granted Mar 19, 2024·0 cites·8 claims
- 2771US9494901B2Fixing device and image forming apparatus with a rotatable light shieldSAITO KAZUYA·Filed 2015·Granted Nov 15, 2016·1 cites·19 claims
- 2871US8559860B2Fixing device and image forming apparatus including sameISHIGAYA YASUNORI·Filed 2011·Granted Oct 15, 2013·1 cites·10 claims
- 2969US9223268B2Fixing device, belt device, and image forming apparatusYAMAGUCHI YOSHIKI·Filed 2014·Granted Dec 29, 2015·1 cites·20 claims
- 3069US9213281B2Fixing device with mechanism capable of heating fixing rotary body by electromagnetic induction effectively and image forming apparatus incorporating sameISHIGAYA YASUNORI·Filed 2012·Granted Dec 15, 2015·1 cites·18 claims
- 3168US9448516B2Fixing device temperature control method, fixing device, and image forming apparatusISHIGAYA YASUNORI·Filed 2013·Granted Sep 20, 2016·1 cites·19 claims
- 3268US9075357B2Fixing device and image forming apparatus including sameKISHI KAZUHITO·Filed 2014·Granted Jul 7, 2015·1 cites·8 claims
- 3367US10678170B2Fixing device and image forming apparatusRICOH CO LTD·Filed 2018·Granted Jun 9, 2020·0 cites·5 claims
- 3467US8867943B2Fixing device and image forming apparatus incorporating sameISHIGAYA YASUNORI·Filed 2011·Granted Oct 21, 2014·1 cites·22 claims
- 3564US9354567B2Fixing device, fixing device control method, and image forming apparatusWAIDA TAKUMI·Filed 2011·Granted May 31, 2016·1 cites·7 claims
- 3662US10156818B2Fixing device and image forming apparatusISHIGAYA YASUNORI·Filed 2017·Granted Dec 18, 2018·0 cites·20 claims
- 3760US12085877B2Conveyance device and image forming apparatusSHOJI KEITARO·Filed 2023·Granted Sep 10, 2024·0 cites·10 claims
- 3860US11256200B2Fixing device, heating device, and image forming device with a substrate covering member covering a relay substrateRICOH CO LTD·Filed 2021·Granted Feb 22, 2022·0 cites·12 claims
- 3958US12210303B2Sheet conveyor and image forming apparatus incorporating the sheet conveyorSHOJI KEITARO·Filed 2023·Granted Jan 28, 2025·0 cites·20 claims
- 4058US11687020B2Heating device, fixing device, and image forming apparatusIMADA TAKAHIRO·Filed 2021·Granted Jun 27, 2023·0 cites·11 claims
- 4158US9405242B2Fixing device and image forming deviceHASE TAKAMASA·Filed 2015·Granted Aug 2, 2016·0 cites·27 claims
- 4258US9042761B2Fixing device and image forming apparatusUCHITANI TAKESHI·Filed 2013·Granted May 26, 2015·0 cites·15 claims
- 4356US12025935B2Heating device, fixing device, and image forming apparatusISHIGAYA YASUNORI·Filed 2023·Granted Jul 2, 2024·0 cites·20 claims
- 4456US9141047B2Fixing device and image forming apparatusUCHITANI TAKESHI·Filed 2015·Granted Sep 22, 2015·0 cites·14 claims
- 4555US9285737B2Fixing device and image forming apparatusISHIGAYA YASUNORI·Filed 2014·Granted Mar 15, 2016·0 cites·14 claims
- 4655US8977156B2Fixing device and image forming apparatus including sameYAMAMOTO TAKESHI·Filed 2014·Granted Mar 10, 2015·0 cites·17 claims
- 4755US2025110433A1Heating device, fixing device, and image forming apparatusSHOJI KEITARO·Filed 2024·Application pending·0 cites
- 4855US2025076797A1Heating device, fixing device, and image forming apparatusISHIGAYA YASUNORI·Filed 2024·Application pending·0 cites
- 4953US9235177B2Fixing device and image forming apparatus incorporating sameSESHITA TAKUYA·Filed 2012·Granted Jan 12, 2016·0 cites·28 claims
- 5051US9164438B2Fixing device temperature control method, fixing device, and image forming apparatusSAMEI MASAHIRO·Filed 2013·Granted Oct 20, 2015·0 cites·16 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →