Inventor · disambiguated record
Tomofumi Yoshida
Also filed as: YOSHIDA TOMOFUMI
54 granted patents·5 pending applications·327 citations·filing 2000–2023
98Inventor score
Top patents by PatentIndex Score
59 records- 0197US8019254B2Toner conveying device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2007·Granted Sep 13, 2011·32 cites·11 claims
- 0295US8135329B2Toner conveyer device, process cartridge, and image forming apparatusSHIMIZU YOSHIYUKI·Filed 2007·Granted Mar 13, 2012·23 cites·16 claims
- 0395US7424263B2Toner recovery belt conveyor, process cartridge, and image forming apparatus using the sameRICOH KK·Filed 2006·Granted Sep 9, 2008·23 cites·13 claims
- 0492US8571426B2Toner supply method, development device, process unit, and image forming apparatusKUBOTA TOMOHIRO·Filed 2011·Granted Oct 29, 2013·8 cites·20 claims
- 0592US8275285B2Process cartridge and image forming apparatusKAWAKAMI YOSHIHIRO·Filed 2008·Granted Sep 25, 2012·15 cites·11 claims
- 0692US7965957B2Developing device and image forming apparatus that uses this developing deviceRICOH CO LTD·Filed 2008·Granted Jun 21, 2011·13 cites·12 claims
- 0792US7945203B2Waste-toner collecting device, process cartridge, and image forming apparatusRICOH CO LTD·Filed 2008·Granted May 17, 2011·13 cites·10 claims
- 0892US7890044B2Powder conveyance device, toner conveyance device, process cartridge and image forming apparatusRICOH CO LTD·Filed 2007·Granted Feb 15, 2011·13 cites·13 claims
- 0991US8768203B2Image forming apparatus capable of effectively utilizing interior spaceHAMADA MANABU·Filed 2011·Granted Jul 1, 2014·12 cites·18 claims
- 1091US7979013B2Developing device of image forming apparatusRICOH CO LTD·Filed 2007·Granted Jul 12, 2011·13 cites·15 claims
- 1190US8160476B2Latent 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
- 1290US7634213B2Toner collecting device, image forming unit and image forming apparatusRICOH KK·Filed 2006·Granted Dec 15, 2009·11 cites·7 claims
- 1386US8861991B2Developer amount detector, and developer container, development device, and image forming apparatus incorporating sameKUBOTA TOMOHIRO·Filed 2012·Granted Oct 14, 2014·4 cites·18 claims
- 1485US9690231B2Toner container, developing device, process cartridge, and image forming apparatus that include an operating member to move a shutter for a toner outlet via a linking memberYOSHIDA TOMOFUMI·Filed 2014·Granted Jun 27, 2017·2 cites·31 claims
- 1585US8442414B2Seal member, developing device, process cartridge, and image forming apparatusKUBOTA TOMOHIRO·Filed 2011·Granted May 14, 2013·3 cites·23 claims
- 1684US7965958B2Developing device, process cartridge and image forming apparatusRICOH CO LTD·Filed 2008·Granted Jun 21, 2011·7 cites·14 claims
- 1784US7917077B2Waste-toner housing device, and image forming apparatusRICOH CO LTD·Filed 2007·Granted Mar 29, 2011·7 cites·14 claims
- 1884US7873302B2Cleaning device and image forming apparatusRICOH CO LTD·Filed 2007·Granted Jan 18, 2011·7 cites·17 claims
- 1984US7676184B2Developing apparatusRICOH KK·Filed 2007·Granted Mar 9, 2010·8 cites·12 claims
- 2081US8260186B2Toner 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
- 2180US10915063B2Removable unit and image forming apparatus incorporating sameYOSHIDA TOMOFUMI·Filed 2019·Granted Feb 9, 2021·1 cites·13 claims
- 2280US7706724B2Charging-roller bearing member, process cartridge, and image forming apparatusRICOH KK·Filed 2007·Granted Apr 27, 2010·6 cites·14 claims
- 2379US7623821B2Conveyor device, process cartridge, image forming apparatus, and method of forming imageRICOH KK·Filed 2007·Granted Nov 24, 2009·5 cites·14 claims
- 2476US9042745B2Developer 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
- 2576US8526849B2Process cartridge and image forming apparatusYOSHIDA TOMOFUMI·Filed 2010·Granted Sep 3, 2013·2 cites·9 claims
- 2675US8755720B2Powder supply device, developing device, and image forming apparatusMITANI RIE·Filed 2012·Granted Jun 17, 2014·3 cites·10 claims
- 2775US8208832B2Toner-collecting device and image forming apparatusYOSHIDA TOMOFUMI·Filed 2008·Granted Jun 26, 2012·4 cites·18 claims
- 2875US8135313B2Powder 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
- 2974US8095035B2Developing 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
- 3071US11231664B2Toner container having a shutter, a lever disposed on one side, and a pivoting portion on the other side which rotate together with a common shaftRICOH CO LTD·Filed 2020·Granted Jan 25, 2022·0 cites·10 claims
- 3171US10564572B2Toner container with an operating structure disposed on a first side, and a shutter disposed on a second sideRICOH CO LTD·Filed 2019·Granted Feb 18, 2020·0 cites·20 claims
- 3269US8843005B2Developing device, process unit, and image forming apparatusYOSHIDA TOMOFUMI·Filed 2012·Granted Sep 23, 2014·1 cites·19 claims
- 3368US10915040B2Toner container with an operating structure disposed on a first side, a shutter disposed on a second side, and a lockRICOH CO LTD·Filed 2019·Granted Feb 9, 2021·0 cites·16 claims
- 3468US10365584B2Toner container, developing device, process cartridge, and image forming apparatus that include a toner container contacting surface to contact with a developing device engagement releasing structureRICOH CO LTD·Filed 2018·Granted Jul 30, 2019·0 cites·19 claims
- 3568USD597129SProcess cartridge for image forming apparatusRICOH KK·Filed 2007·Granted Jul 28, 2009·15 cites·1 claims
- 3667US8913926B2Developer container, developing device, process cartridge, image forming device, and developer refilling methodNAKAMURA KENJI·Filed 2012·Granted Dec 16, 2014·1 cites·20 claims
- 3767US8081897B2Seal member, developing device, process cartridge, and image forming apparatusKUBOTA TOMOHIRO·Filed 2008·Granted Dec 20, 2011·2 cites·20 claims
- 3864US10025227B2Toner container, developing device, process cartridge, and image forming apparatus that include a toner container contacting surface to contact with a developing device engagement releasing structureYOSHIDA TOMOFUMI·Filed 2017·Granted Jul 17, 2018·0 cites·16 claims
- 3962US6549731B1Image forming apparatusHITACHI LTD·Filed 2000·Granted Apr 15, 2003·8 cites·4 claims
- 4058US2018369095A1Cosmetic composition comprising a specific filler combination and a film-forming polymer to increase long-lasting effectsOREAL·Filed 2014·Application pending·0 cites
- 4157US9201393B2Toner container, process cartridge, and image forming apparatusFURUICHI YUUSUKE·Filed 2014·Granted Dec 1, 2015·0 cites·13 claims
- 4257US8103195B2Toner agitating unit, toner hopper, process cartridge, and image forming apparatusYOSHIDA TOMOFUMI·Filed 2008·Granted Jan 24, 2012·1 cites·8 claims
- 4357USD590012SProcess cartridge for image forming apparatusRICOH KK·Filed 2007·Granted Apr 7, 2009·10 cites·1 claims
- 4457US7434161B2Document registration system, method thereof, program thereof and storage medium thereofCANON KK·Filed 2002·Granted Oct 7, 2008·4 cites·14 claims
- 4557US2024217244A1Liquid supply apparatus and liquid application apparatusYOSHIDA TOMOFUMI·Filed 2023·Application pending·0 cites
- 4655US11771631B2Cosmetic composition comprising a specific filler combination and a film-forming polymer to increase long-lasting effectsOREAL·Filed 2020·Granted Oct 3, 2023·0 cites·8 claims
- 4755USD580968SProcess cartridge for image forming apparatusRICOH KK·Filed 2007·Granted Nov 18, 2008·9 cites·1 claims
- 4854US12443393B2Electronic control device and steering systemDENSO CORP·Filed 2022·Granted Oct 14, 2025·0 cites·12 claims
- 4952US9229372B2Developing device, process cartridge, and image forming apparatusYOSHIDA TOMOFUMI·Filed 2014·Granted Jan 5, 2016·0 cites·16 claims
- 5050USD590011SProcess cartridge for image forming apparatusRICOH KK·Filed 2007·Granted Apr 7, 2009·7 cites·1 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →