Inventor · disambiguated record
Yoshitaka Fujinuma
Also filed as: FUJINUMA YOSHITAKA
34 granted patents·1 pending application·205 citations·filing 1998–2020
97Inventor score
Top patents by PatentIndex Score
35 records- 0189US5923933AElectrophotographic apparatusHITACHI KOKI KK·Filed 1998·Granted Jul 13, 1999·49 cites·14 claims
- 0287US7580657B2Developing device in image-forming deviceRICOH KK·Filed 2006·Granted Aug 25, 2009·9 cites·18 claims
- 0385US7826775B2Developing device and image forming apparatusRICOH KK·Filed 2008·Granted Nov 2, 2010·8 cites·11 claims
- 0484US7792465B2Developing device, process cartridge, and image forming apparatusRICOH KK·Filed 2008·Granted Sep 7, 2010·7 cites·14 claims
- 0583US7904001B2Developing unit, process cartridge, and image forming apparatus having a plurality of conveyor members, a supply part, and a discharge partRICOH CO LTD·Filed 2008·Granted Mar 8, 2011·7 cites·21 claims
- 0679US8374528B2Developing device, process cartridge, and image forming apparatus that house a developing agent for forming an imageRICOH CO LTD·Filed 2011·Granted Feb 12, 2013·2 cites·19 claims
- 0779US8045893B2Developing device and image forming apparatus including inclined transport screwRICOH CO LTD·Filed 2008·Granted Oct 25, 2011·5 cites·9 claims
- 0877US8346134B2Developing device and image forming apparatus that include a developer transport amount regulation partRICOH CO LTD·Filed 2011·Granted Jan 1, 2013·2 cites·32 claims
- 0977US6285846B1Fixing deviceHITACHI KOKI KK·Filed 2000·Granted Sep 4, 2001·17 cites·4 claims
- 1073US8041269B2Development apparatus having two developer bearers and two development chambersRICOH CO LTD·Filed 2007·Granted Oct 18, 2011·4 cites·14 claims
- 1172US8045900B2Developing device, process cartridge, and image forming apparatus that house a developing agent for forming an imageRICOH CO LTD·Filed 2008·Granted Oct 25, 2011·3 cites·13 claims
- 1272US6415120B1Corona discharging apparatus for use in electrophotographic printing apparatusHITACHI KOKI KK·Filed 2000·Granted Jul 2, 2002·15 cites·1 claims
- 1369US7324778B2Fixing device including heating roller and pressure rollerRICOH PRINTING SYS LTD·Filed 2005·Granted Jan 29, 2008·3 cites·6 claims
- 1468US7792466B2Image forming apparatus and developing deviceRICOH KK·Filed 2007·Granted Sep 7, 2010·3 cites·16 claims
- 1568US7010242B2Image forming apparatusRICOH PRINTING SYSTEMS INC·Filed 2003·Granted Mar 7, 2006·13 cites·22 claims
- 1667US8027623B2Developing device, process cartridge, and image forming apparatus having a discharge port facing a section of a transport member without a screw partRICOH CO LTD·Filed 2008·Granted Sep 27, 2011·3 cites·12 claims
- 1763US8145102B2Developing device, process cartridge, image forming apparatus and developer discharge device having a discharge portTATEYAMA SUSUMU·Filed 2008·Granted Mar 27, 2012·2 cites·21 claims
- 1862US10792920B2Laminated substrate, liquid discharge head, and liquid discharge apparatusIWATA JUNICHI·Filed 2019·Granted Oct 6, 2020·0 cites·8 claims
- 1961US8010020B2Developing device and image forming apparatus equipped with the sameRICOH CO LTD·Filed 2008·Granted Aug 30, 2011·2 cites·6 claims
- 2060US11141976B2Liquid discharge head, liquid discharge device, and liquid discharge apparatusRICOH CO LTD·Filed 2020·Granted Oct 12, 2021·0 cites·18 claims
- 2157US8014706B2Developing device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2008·Granted Sep 6, 2011·1 cites·20 claims
- 2257US6330414B1Developing system having a plurality of developing rollers with opposing magnets of same polarityHITACHI KOKI KK·Filed 1999·Granted Dec 11, 2001·14 cites·14 claims
- 2354US10081182B2Liquid discharge head, liquid discharge device, and liquid discharge apparatusKIKUCHI ATSUSHI·Filed 2017·Granted Sep 25, 2018·0 cites·13 claims
- 2454US8620194B2Developing device, process cartridge, image forming apparatus, and developer discharge device having a discharge portTATEYAMA SUSUMU·Filed 2012·Granted Dec 31, 2013·0 cites·6 claims
- 2554USD463818SDeveloper bottleHITACHI KOKI KK·Filed 2000·Granted Oct 1, 2002·8 cites·1 claims
- 2653USD467265SFixing deviceHITACHI KOKI KK·Filed 2001·Granted Dec 17, 2002·8 cites·1 claims
- 2748US7079804B2Image forming apparatusRICOH PRINTING SYS LTD·Filed 2004·Granted Jul 18, 2006·4 cites·4 claims
- 2846US6259883B1Imaging forming apparatus having a toner exhausting deviceHITACHI KOKI KK·Filed 2000·Granted Jul 10, 2001·3 cites·7 claims
- 2945USD441011SToner bottle capHITACHI KOKI KK·Filed 2000·Granted Apr 24, 2001·5 cites·1 claims
- 3044US7616915B2Image forming apparatus having a force-converting mechanism to detach a rotary bodyRICOH KK·Filed 2007·Granted Nov 10, 2009·0 cites·12 claims
- 3142US5907755ADeveloping deviceHITACHI KOKI KK·Filed 1998·Granted May 25, 1999·6 cites·2 claims
- 3241US7272355B2Cleaning device for image forming apparatusRICOH PRINTING SYS LTD·Filed 2005·Granted Sep 18, 2007·0 cites·11 claims
- 3338US2008253810A1Developing device, process cartridge, and image forming apparatusTATEYAMA SUSUMU·Filed 2008·Application pending·0 cites
- 3436USD438892SPhotosensitive drum for printerHITACHI KOKI KK·Filed 2000·Granted Mar 13, 2001·2 cites·1 claims
- 3534US6341210B1Toner cartridgeHITACHI KOKI KK·Filed 2000·Granted Jan 22, 2002·0 cites·2 claims
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