Inventor · disambiguated record
Keisuke Sugiyama
Also filed as: SUGIYAMA KEISUKE
63 granted patents·22 pending applications·265 citations·filing 2007–2025
98Inventor score
Top patents by PatentIndex Score
85 records- 0196US8010026B2Image forming system and method of detecting color misregistrationRICOH CO LTD·Filed 2007·Granted Aug 30, 2011·27 cites·16 claims
- 0295US9085436B2Sheet ejecting device, image forming system, and sheet ejecting methodSUZUKI JUNYA·Filed 2013·Granted Jul 21, 2015·12 cites·10 claims
- 0395US8936240B2Sheet discharging device, image forming system, and sheet discharging methodHOSHINO TOMOMICHI·Filed 2013·Granted Jan 20, 2015·13 cites·9 claims
- 0495US7693468B2Image forming apparatus capable of effectively forming a quality color imageRICOH KK·Filed 2007·Granted Apr 6, 2010·22 cites·12 claims
- 0595US7653332B2Image forming apparatus having enhanced controlling method for reducing deviation of superimposed imagesRICOH KK·Filed 2007·Granted Jan 26, 2010·23 cites·16 claims
- 0695US7630657B2Method, apparatus, and program for image forming capable of effectively adjusting positional deviationRICOH KK·Filed 2007·Granted Dec 8, 2009·23 cites·20 claims
- 0793US8496239B2Sheet processing apparatus, image forming system, and sheet processing methodFURUHASHI TOMOHIRO·Filed 2011·Granted Jul 30, 2013·11 cites·12 claims
- 0892US8925917B2Sheet output device, sheet processing apparatus, image forming system, and sheet output methodWATANABE TAKAHIRO·Filed 2013·Granted Jan 6, 2015·9 cites·11 claims
- 0992US8393618B2Skew correction device, sheet handling apparatus, and image forming systemNAKADA KYOSUKE·Filed 2012·Granted Mar 12, 2013·10 cites·10 claims
- 1091US8712299B2Image forming apparatus having a primary transfer unit, a secondary transfer unit, and a direct transfer unitSUGITA NARUMI·Filed 2011·Granted Apr 29, 2014·8 cites·10 claims
- 1190US9561927B2Sheet discharging device, image forming system, and sheet discharging methodHOSHINO TOMOMICHI·Filed 2015·Granted Feb 7, 2017·4 cites·16 claims
- 1289US11530107B2Sheet processing apparatus and image forming system incorporating the sheet processing apparatusSUGIYAMA KEISUKE·Filed 2020·Granted Dec 20, 2022·2 cites·15 claims
- 1389US8727345B2Sheet discharging device, sheet processing apparatus, image forming system, and sheet discharging methodKONNO KAZUNORI·Filed 2012·Granted May 20, 2014·9 cites·9 claims
- 1489US8521046B2Image forming apparatusSUGIYAMA KEISUKE·Filed 2010·Granted Aug 27, 2013·6 cites·14 claims
- 1588US8485514B2Sheet processing apparatus, image forming system, and sheet processing methodSUGIYAMA KEISUKE·Filed 2011·Granted Jul 16, 2013·7 cites·12 claims
- 1687US12503331B2Medium processing apparatus and image forming system incorporating sameSETO KAZUKI·Filed 2022·Granted Dec 23, 2025·1 cites·19 claims
- 1787US12072658B2Sheet laminator and image forming system incorporating the sheet laminatorYOSHIDA SHOTA·Filed 2023·Granted Aug 27, 2024·2 cites·7 claims
- 1887US7697867B2Image forming apparatus with fluctuation-pattern detection and fine-tuning-pattern correctionRICOH KK·Filed 2007·Granted Apr 13, 2010·11 cites·20 claims
- 1986US8702087B2Sheet handling apparatus, image forming system, and sheet reception control methodFURUHASHI TOMOHIRO·Filed 2012·Granted Apr 22, 2014·6 cites·6 claims
- 2085US9260264B2Sheet discharging device, image forming system, and sheet discharging methodHOSHINO TOMOMICHI·Filed 2014·Granted Feb 16, 2016·4 cites·19 claims
- 2185US8398067B2Sheet processing apparatus and image forming apparatusFURUHASHI TOMOHIRO·Filed 2011·Granted Mar 19, 2013·6 cites·6 claims
- 2285US7937007B2Image forming apparatus and image forming method of effectively detecting a speed deviation pattern of the image forming apparatusRICOH CO LTD·Filed 2007·Granted May 3, 2011·7 cites·7 claims
- 2384US9221648B2Sheet processing device, image forming system, and method of additionally folding sheet bundleSUGIYAMA KEISUKE·Filed 2014·Granted Dec 29, 2015·7 cites·10 claims
- 2483US8960660B2Sheet processing apparatus and image forming systemFURUHASHI TOMOHIRO·Filed 2013·Granted Feb 24, 2015·4 cites·10 claims
- 2582US9075377B2Recording medium discharging deviceNAGASAKO SHUUYA·Filed 2013·Granted Jul 7, 2015·4 cites·8 claims
- 2679US8931773B2Sheet folding device having inclined stacking surfaceSUGIYAMA KEISUKE·Filed 2012·Granted Jan 13, 2015·4 cites·10 claims
- 2777US8260179B2Image forming apparatus including first and second image forming devices and first and second belt unitsMIURA YOHEI·Filed 2010·Granted Sep 4, 2012·3 cites·16 claims
- 2873US2025376350A1Medium processing apparatus and image forming systemYAMAMOTO TAKASHI·Filed 2025·Application pending·0 cites
- 2970US9139395B2Rotatable tray for sheet processing apparatusNIIKURA YASUO·Filed 2013·Granted Sep 22, 2015·2 cites·16 claims
- 3070US9050772B2Sheet processing apparatus, image forming system, and sheet-bundle fold-enhancing methodHIDAKA MAKOTO·Filed 2014·Granted Jun 9, 2015·2 cites·20 claims
- 3169US9126797B2Sheet processing apparatus and image forming systemKIKUCHI ATSUSHI·Filed 2014·Granted Sep 8, 2015·2 cites·16 claims
- 3269US2025289681A1Medium processing apparatus, image forming system, and storage mediumKOBAYASHI NAOKI·Filed 2025·Application pending·0 cites
- 3368US9533852B2Sheet ejecting device, image forming system, and sheet ejecting methodSUZUKI JUNYA·Filed 2015·Granted Jan 3, 2017·1 cites·10 claims
- 3468US9316986B2Recording medium discharging deviceNAGASAKO SHUUYA·Filed 2015·Granted Apr 19, 2016·1 cites·3 claims
- 3568US8770569B2Sheet processing apparatus, image forming system, and sheet processing methodFURUHASHI TOMOHIRO·Filed 2012·Granted Jul 8, 2014·2 cites·3 claims
- 3667US9624061B2Sheet processing device, image forming system, and computer-readable storage mediumMATSUSHITA SHINGO·Filed 2016·Granted Apr 18, 2017·1 cites·14 claims
- 3767US2025382151A1Medium processing apparatus and image forming systemYANAI YUTA·Filed 2025·Application pending·0 cites
- 3867US2025382150A1Medium processing apparatus and image forming systemABE KOHTA·Filed 2025·Application pending·0 cites
- 3967US2025296802A1Medium processing apparatus and image forming system incorporating sameSUZUKI NOBUYOSHI·Filed 2025·Application pending·0 cites
- 4066US7885577B2Rotation transmission device and image forming apparatusRICOH CO LTD·Filed 2008·Granted Feb 8, 2011·2 cites·18 claims
- 4164US12485660B2Sheet separation device, sheet laminator, image forming apparatus, and image forming systemTAKAHASHI WATARU·Filed 2022·Granted Dec 2, 2025·0 cites·19 claims
- 4264US12466176B2Sheet laminator and image forming system incorporating the sheet laminatorSHIMODATE KAZUKI·Filed 2023·Granted Nov 11, 2025·0 cites·17 claims
- 4364US11926133B2Sheet laminator, image forming apparatus, and image forming systemMONMA SHINYA·Filed 2022·Granted Mar 12, 2024·0 cites·20 claims
- 4464US9950886B2Sheet conveying device, image reading device incorporating the sheet conveying device, and image forming apparatus incorporating the sheet conveying deviceSHIMAZU TAKEHISA·Filed 2017·Granted Apr 24, 2018·1 cites·12 claims
- 4564US9260268B2Sheet processing apparatus, image forming system, and method of additionally folding sheet bundleSUGIYAMA KEISUKE·Filed 2014·Granted Feb 16, 2016·1 cites·12 claims
- 4663US12158719B2Sheet laminator and image forming system incorporating the sheet laminatorTAKAI NAOKI·Filed 2023·Granted Dec 3, 2024·0 cites·11 claims
- 4763US11117763B2Sheet processing apparatus and image forming system incorporating the sheet processing apparatusSUGIYAMA KEISUKE·Filed 2020·Granted Sep 14, 2021·0 cites·16 claims
- 4862US12487549B2Sheet processing apparatus, sheet processing method, and image forming systemSUGIYAMA KEISUKE·Filed 2024·Granted Dec 2, 2025·0 cites·14 claims
- 4962US9044915B2Sheet processing device and image forming systemHOSHINO TOMOMICHI·Filed 2014·Granted Jun 2, 2015·1 cites·10 claims
- 5062US8064801B2Drive transmission device, and image forming apparatus and process cartridge using sameSUGIYAMA KEISUKE·Filed 2008·Granted Nov 22, 2011·2 cites·6 claims
Showing the top 50 of 85 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →