Inventor · disambiguated record
Hirotaka Hatta
Also filed as: HATTA HIROTAKA
15 granted patents·1 pending application·63 citations·filing 1994–2024
90Inventor score
Technology areasG03G
Top patents by PatentIndex Score
16 records- 0188US8396383B2Image forming apparatus and process cartridgeHONJOH KENJI·Filed 2010·Granted Mar 12, 2013·6 cites·12 claims
- 0286US9201378B2Cleaning unit, process cartridge incorporating same, and image forming apparatus incorporating sameASAOKA AKIRA·Filed 2014·Granted Dec 1, 2015·4 cites·19 claims
- 0380US6546228B2Image forming apparatus conveniently upgradable to a duplex image forming apparatusRICOH KK·Filed 2001·Granted Apr 8, 2003·21 cites·28 claims
- 0469US12510859B2Image forming apparatus and coating-film adjusting methodKIMURA HIDEKI·Filed 2024·Granted Dec 30, 2025·0 cites·6 claims
- 0569US9170554B2Cleaning device, process cartridge, and image forming apparatusKOJIMA TAKESHI·Filed 2013·Granted Oct 27, 2015·1 cites·20 claims
- 0664US7603053B2Image forming apparatusRICOH KK·Filed 2007·Granted Oct 13, 2009·2 cites·8 claims
- 0759US5852762AToner magazine and cleaner for an electrophotographic apparatusRICOH KK·Filed 1997·Granted Dec 22, 1998·14 cites·23 claims
- 0857US7953362B2Image forming apparatus, process cartridge, and lubricant applicatorRICOH CO LTD·Filed 2007·Granted May 31, 2011·1 cites·16 claims
- 0955US9141020B2Charger positioning adjuster and image forming apparatus incorporating sameUENISHI HIROYUKI·Filed 2014·Granted Sep 22, 2015·0 cites·13 claims
- 1053US12416894B2Image forming apparatusGOTO YUTAKA·Filed 2023·Granted Sep 16, 2025·0 cites·13 claims
- 1152US5697038ACleaner and toner magazine for electrophotographic apparatusRICOH KK·Filed 1996·Granted Dec 9, 1997·7 cites·30 claims
- 1248US9268292B2Image forming apparatus including first and second bias voltage supply devicesKOJIMA TAKESHI·Filed 2013·Granted Feb 23, 2016·0 cites·19 claims
- 1344US5555081ACleaner and toner magazine for electrophotographic apparatusRICOH KK·Filed 1994·Granted Sep 10, 1996·4 cites·17 claims
- 1443US9195204B2Image forming apparatusISHIZUKA YUSUKE·Filed 2014·Granted Nov 24, 2015·0 cites·18 claims
- 1539US5873021ACleaner and toner magazine for electrophotographic apparatusRICOH KK·Filed 1997·Granted Feb 16, 1999·3 cites·26 claims
- 1639US2007122217A1Image forming apparatus & associated method of applying a lubricantNAGASHIMA HIROYUKI·Filed 2006·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →