Inventor · disambiguated record
Yoshiyuki Shimizu
Also filed as: SHIMIZU YOSHIYUKI
119 granted patents·23 pending applications·880 citations·filing 1975–2024
99Inventor score
Files withRICOH CO LTD16KUBOTA TOMOHIRO15RICOH KK11HAMAMATSU PHOTONICS KK9MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9
Top patents by PatentIndex Score
142 records- 0197US8744321B2Developer container, developing device, process unit, and image forming apparatusKUBOTA TOMOHIRO·Filed 2013·Granted Jun 3, 2014·17 cites·30 claims
- 0297US8019254B2Toner conveying device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2007·Granted Sep 13, 2011·32 cites·11 claims
- 0395US8792808B2Developer container, developing device, process unit, and image forming apparatusKUBOTA TOMOHIRO·Filed 2013·Granted Jul 29, 2014·7 cites·35 claims
- 0495US8135329B2Toner conveyer device, process cartridge, and image forming apparatusSHIMIZU YOSHIYUKI·Filed 2007·Granted Mar 13, 2012·23 cites·16 claims
- 0595US7720428B2Toner recovery apparatus, process cartridge, and image forming apparatusRICOH KK·Filed 2008·Granted May 18, 2010·19 cites·13 claims
- 0695US7424263B2Toner recovery belt conveyor, process cartridge, and image forming apparatus using the sameRICOH KK·Filed 2006·Granted Sep 9, 2008·23 cites·13 claims
- 0794US10175607B2Developer container including a convex portion, a rotator, and a recessKUBOTA TOMOHIRO·Filed 2017·Granted Jan 8, 2019·4 cites·31 claims
- 0892US8275285B2Process cartridge and image forming apparatusKAWAKAMI YOSHIHIRO·Filed 2008·Granted Sep 25, 2012·15 cites·11 claims
- 0992US7965957B2Developing device and image forming apparatus that uses this developing deviceRICOH CO LTD·Filed 2008·Granted Jun 21, 2011·13 cites·12 claims
- 1092US7945203B2Waste-toner collecting device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2008·Granted May 17, 2011·13 cites·10 claims
- 1192US7890044B2Powder conveyance device, toner conveyance device, process cartridge and image forming apparatusRICOH CO LTD·Filed 2007·Granted Feb 15, 2011·13 cites·13 claims
- 1292US7820348B2Toner recovery apparatus, process cartridge, and image forming apparatusRICOH KK·Filed 2010·Granted Oct 26, 2010·6 cites·4 claims
- 1391US9069284B2Image forming apparatus and powder transport unitSHIMIZU YOSHIYUKI·Filed 2013·Granted Jun 30, 2015·7 cites·12 claims
- 1491US8768203B2Image forming apparatus capable of effectively utilizing interior spaceHAMADA MANABU·Filed 2011·Granted Jul 1, 2014·12 cites·18 claims
- 1591US7979013B2Developing device of image forming apparatusRICOH CO LTD·Filed 2007·Granted Jul 12, 2011·13 cites·15 claims
- 1690US8160476B2Latent image carrier having pairs of first and second positioning protrusions and image forming apparatusSHIMIZU YOSHIYUKI·Filed 2008·Granted Apr 17, 2012·12 cites·20 claims
- 1790US7634213B2Toner collecting device, image forming unit and image forming apparatusRICOH KK·Filed 2006·Granted Dec 15, 2009·11 cites·7 claims
- 1886US8861991B2Developer amount detector, and developer container, development device, and image forming apparatus incorporating sameKUBOTA TOMOHIRO·Filed 2012·Granted Oct 14, 2014·4 cites·18 claims
- 1985US8442414B2Seal member, developing device, process cartridge, and image forming apparatusKUBOTA TOMOHIRO·Filed 2011·Granted May 14, 2013·3 cites·23 claims
- 2084US11117520B2Display control device, display control system, display control method, and programJVC KENWOOD CORP·Filed 2019·Granted Sep 14, 2021·4 cites·19 claims
- 2184US7965958B2Developing device, process cartridge and image forming apparatusRICOH CO LTD·Filed 2008·Granted Jun 21, 2011·7 cites·14 claims
- 2284US7917077B2Waste-toner housing device, and image forming apparatusRICOH CO LTD·Filed 2007·Granted Mar 29, 2011·7 cites·14 claims
- 2384US7873302B2Cleaning device and image forming apparatusRICOH CO LTD·Filed 2007·Granted Jan 18, 2011·7 cites·17 claims
- 2482US9141028B2Image forming apparatus and developer container, developing device, process unit, and replaceable unit thereforTSURITANI SHOH·Filed 2013·Granted Sep 22, 2015·3 cites·13 claims
- 2582US5668673ACatadioptric reduction projection optical systemNIKON CORP·Filed 1995·Granted Sep 16, 1997·62 cites·28 claims
- 2681US8260186B2Toner cartridge with refillable fresh and residual toner chambers, process cartridge, and method of making toner cartridge reusableKUBOTA TOMOHIRO·Filed 2008·Granted Sep 4, 2012·6 cites·8 claims
- 2780US11506994B2Toner cartridge including a protrusion protruding from a center of a conveyance drive gearRICOH CO LTD·Filed 2021·Granted Nov 22, 2022·0 cites·7 claims
- 2880US10816914B2Developer container for image forming apparatusRICOH CO LTD·Filed 2019·Granted Oct 27, 2020·0 cites·30 claims
- 2980US7706724B2Charging-roller bearing member, process cartridge, and image forming apparatusRICOH KK·Filed 2007·Granted Apr 27, 2010·6 cites·14 claims
- 3079US7623821B2Conveyor device, process cartridge, image forming apparatus, and method of forming imageRICOH KK·Filed 2007·Granted Nov 24, 2009·5 cites·14 claims
- 3178US10558145B2Downsized developer container with higher degree of freedomRICOH CO LTD·Filed 2019·Granted Feb 11, 2020·0 cites·30 claims
- 3278US7995949B2Powder conveyance device, process unit, and image forming deviceRICOH CO LTD·Filed 2008·Granted Aug 9, 2011·5 cites·16 claims
- 3377US8774683B2Development device, developer container, and image forming apparatusKUBOTA TOMOHIRO·Filed 2012·Granted Jul 8, 2014·2 cites·22 claims
- 3476US11231663B2Toner cartridge including a protrusion protruding from a center of a conveyance drive gearRICOH CO LTD·Filed 2020·Granted Jan 25, 2022·0 cites·15 claims
- 3576US10295933B2Developer container, developing device, process unit, and image forming apparatusKUBOTA TOMOHIRO·Filed 2018·Granted May 21, 2019·0 cites·7 claims
- 3676US9042745B2Developer amount detector, image forming apparatus incorporating same, and positioning structure for positioning unit within image forming apparatusYOSHIDA TOMOFUMI·Filed 2012·Granted May 26, 2015·2 cites·21 claims
- 3776US8811859B2Developer container, development device, process unit, and image forming apparatusTSURITANI SHOH·Filed 2012·Granted Aug 19, 2014·2 cites·9 claims
- 3876US8712310B2Image forming apparatus and control method thereforSHIMIZU YOSHIYUKI·Filed 2009·Granted Apr 29, 2014·6 cites·18 claims
- 3976US8526849B2Process cartridge and image forming apparatusYOSHIDA TOMOFUMI·Filed 2010·Granted Sep 3, 2013·2 cites·9 claims
- 4076US8052664B2Packaged absorbent articlePROCTER & GAMBLE·Filed 2007·Granted Nov 8, 2011·10 cites·18 claims
- 4175US9061585B2Cooling air introduction apparatus for vehicleFUJIU YUJI·Filed 2012·Granted Jun 23, 2015·8 cites·9 claims
- 4275US8805214B2Image forming apparatusFUJITA MASANARI·Filed 2012·Granted Aug 12, 2014·2 cites·17 claims
- 4375US8579875B2Packaged absorbent articleSHIMIZU YOSHIYUKI·Filed 2011·Granted Nov 12, 2013·6 cites·20 claims
- 4475US8208832B2Toner-collecting device and image forming apparatusYOSHIDA TOMOFUMI·Filed 2008·Granted Jun 26, 2012·4 cites·18 claims
- 4575US8135313B2Powder transport screw, and development device, process unit and image-forming apparatus comprising this powder transport screwYOSHIDA TOMOFUMI·Filed 2008·Granted Mar 13, 2012·4 cites·17 claims
- 4674US8095035B2Developing device, process unit, and image forming apparatus, with supporting members, grooves, and supported developing rollerOOYOSHI HIROBUMI·Filed 2008·Granted Jan 10, 2012·4 cites·15 claims
- 4773US8961483B2Individually packaged absorbent article by wrapper sheetPROCTER & GAMBLE·Filed 2013·Granted Feb 24, 2015·4 cites·16 claims
- 4873US8189027B2Exposure unit, image forming apparatus and image forming methodMIYADERA TATSUYA·Filed 2009·Granted May 29, 2012·4 cites·23 claims
- 4972US11151957B2Display device, drive voltage setting method, and computer programSAKAI DISPLAY PRODUCTS CORP·Filed 2017·Granted Oct 19, 2021·1 cites·10 claims
- 5072US5175652AImaging optical systemNIKON CORP·Filed 1991·Granted Dec 29, 1992·35 cites·14 claims
Showing the top 50 of 142 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →