Inventor · disambiguated record
Yasuhide Ohkubo
Also filed as: OHKUBO YASUHIDE
30 granted patents·6 pending applications·92 citations·filing 2006–2021
95Inventor score
Top patents by PatentIndex Score
36 records- 0193US7918451B2Switchback mechanism and image forming apparatusRICOH CO LTD·Filed 2008·Granted Apr 5, 2011·14 cites·6 claims
- 0292US8118296B2Open/close mechanism for paper tray for use in image forming apparatusNISHII TOSHIKANE·Filed 2010·Granted Feb 21, 2012·6 cites·7 claims
- 0391US8256769B2Feeding device and image forming apparatusTAKAHIRA MASAFUMI·Filed 2011·Granted Sep 4, 2012·10 cites·4 claims
- 0491US7731170B2Open/close mechanism for paper tray for use in image forming apparatusRICOH KK·Filed 2007·Granted Jun 8, 2010·10 cites·8 claims
- 0591US7676176B2Image forming apparatus including cover and supporting unitRICOH KK·Filed 2008·Granted Mar 9, 2010·13 cites·14 claims
- 0686US7878725B2Image forming apparatus having removable unitsRICOH CO LTD·Filed 2007·Granted Feb 1, 2011·8 cites·14 claims
- 0784US7677555B2Sheet conveying apparatus and image forming apparatus with vibration applying unitRICOH KK·Filed 2008·Granted Mar 16, 2010·8 cites·9 claims
- 0879US9261816B2Developer amount detector, developing device, process unit, and image forming apparatusSAKAYA KOHTA·Filed 2014·Granted Feb 16, 2016·2 cites·20 claims
- 0978US8070159B2Switchback mechanism and image forming apparatusHONDA HARUYUKI·Filed 2011·Granted Dec 6, 2011·2 cites·17 claims
- 1077US7992860B2Sheet feeding device, image forming apparatus, and sheet feeding methodRICOH CO LTD·Filed 2009·Granted Aug 9, 2011·5 cites·15 claims
- 1175US7731182B2Sliding mechanism, sheet guide, sheet loading device, and image forming apparatusRICOH KK·Filed 2007·Granted Jun 8, 2010·5 cites·12 claims
- 1266US8356813B2Paper feeder assembly for image forming apparatus, and image forming apparatus incorporating the sameRICOH CO LTD·Filed 2011·Granted Jan 22, 2013·1 cites·20 claims
- 1366US8240657B2Sheet feeding device and image forming apparatusTANAKA MIZUNA·Filed 2008·Granted Aug 14, 2012·3 cites·22 claims
- 1465US8045888B2Sheet conveying device and image forming apparatusRICOH CO LTD·Filed 2006·Granted Oct 25, 2011·2 cites·18 claims
- 1563US10816916B2Toner conveyance device with a film attached to a wall surrounding a conveyance screwOHKUBO YASUHIDE·Filed 2019·Granted Oct 27, 2020·0 cites·13 claims
- 1660US8874021B2Media guide mechanism, fixing device and image forming apparatus incorporating sameSAKAYA KOHTA·Filed 2012·Granted Oct 28, 2014·1 cites·17 claims
- 1759US7954814B2Feeding device and image forming apparatusRICOH CO LTD·Filed 2008·Granted Jun 7, 2011·1 cites·11 claims
- 1858US8561979B2Open/close mechanism for paper tray for use in image forming apparatusNISHII TOSHIKANE·Filed 2012·Granted Oct 22, 2013·0 cites·12 claims
- 1957US9201393B2Toner container, process cartridge, and image forming apparatusFURUICHI YUUSUKE·Filed 2014·Granted Dec 1, 2015·0 cites·13 claims
- 2057US8807552B2Image forming apparatus, optional sheet feeder, and base plate memberKONDO KAZUYOSHI·Filed 2009·Granted Aug 19, 2014·1 cites·16 claims
- 2155US8320798B2Sheet conveying device and image forming apparatusNANNO SHIGEO·Filed 2011·Granted Nov 27, 2012·0 cites·16 claims
- 2252US9229372B2Developing device, process cartridge, and image forming apparatusYOSHIDA TOMOFUMI·Filed 2014·Granted Jan 5, 2016·0 cites·16 claims
- 2351US8953975B2Seal and image forming device including a sealOHKUBO YASUHIDE·Filed 2013·Granted Feb 10, 2015·0 cites·18 claims
- 2451US7784780B2Manual sheet-feeding device and image forming apparatusRICOH KK·Filed 2007·Granted Aug 31, 2010·0 cites·11 claims
- 2550US7963520B2Sheet loading device, sheet conveying device, and image forming apparatusRICOH CO LTD·Filed 2008·Granted Jun 21, 2011·0 cites·19 claims
- 2649US11054762B2Powder container, process cartridge, and image forming apparatusTAKANO KUNIYORI·Filed 2017·Granted Jul 6, 2021·0 cites·28 claims
- 2748US8678371B2Manual sheet-feeding device and image forming apparatusNANNO SHIGEO·Filed 2010·Granted Mar 25, 2014·0 cites·14 claims
- 2847US2007285701A1Job status notifying image forming apparatusOHTA YOSHIHIDE·Filed 2007·Application pending·0 cites
- 2944US11579545B2Toner container having shutter and image forming apparatusOHKUBO YASUHIDE·Filed 2021·Granted Feb 14, 2023·0 cites·13 claims
- 3043US2010192710A9Sheet conveying device and image forming apparatusRICOH KK·Filed 2008·Application pending·0 cites
- 3141US8260187B2Image forming deviceHONDA HARUYUKI·Filed 2008·Granted Sep 4, 2012·0 cites·8 claims
- 3241US2008273908A1Sheet discharging device and image forming apparatusRICOH KK·Filed 2008·Application pending·0 cites
- 3338US2007065201A1Sheet conveying apparatus and image forming apparatusRICOH PRINTING SYS LTD·Filed 2006·Application pending·0 cites
- 3435US9500992B2Developing device having a powder conveyor, process cartridge, and image forming apparatus including the sameYOSHIDA TOMOFUMI·Filed 2015·Granted Nov 22, 2016·0 cites·12 claims
- 3535US2010225041A1Image forming systemRICOH KK·Filed 2010·Application pending·0 cites
- 3635US2009162772A1Image forming methodFUWA KAZUOKI·Filed 2008·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →