Inventor · disambiguated record
Tetsuro Hirota
Also filed as: HIROTA TETSURO
35 granted patents·1 pending application·497 citations·filing 1982–2016
97Inventor score
Top patents by PatentIndex Score
36 records- 0195US5818482AInk jet printing headRICOH KK·Filed 1995·Granted Oct 6, 1998·134 cites·30 claims
- 0292US9523940B2Powder detector, developing device, process cartridge, image forming apparatus, and powder detecting methodHOSOKAWA HIROSHI·Filed 2015·Granted Dec 20, 2016·5 cites·16 claims
- 0392US7992953B2Image forming apparatus and method of correcting deviation of shooting positionRICOH CO LTD·Filed 2008·Granted Aug 9, 2011·14 cites·10 claims
- 0491US9645538B2Developing device, and image forming apparatus and process cartridge incorporating sameWATANABE MASAHIRO·Filed 2016·Granted May 9, 2017·4 cites·11 claims
- 0591US7914096B2Image forming apparatus, landing position shift correction method, and landing position shift correction sheet memberRICOH CO LTD·Filed 2008·Granted Mar 29, 2011·13 cites·10 claims
- 0690US9817335B2Powder amount detector, powder supply device, and image forming apparatus incorporating sameKAWASHIMA NAOHIRO·Filed 2016·Granted Nov 14, 2017·6 cites·20 claims
- 0790US9523664B2Powder detector, image forming apparatus including same, and powder detecting methodHIROTA TETSURO·Filed 2015·Granted Dec 20, 2016·4 cites·15 claims
- 0888US5754202AInk jet recording apparatusRICOH KK·Filed 1996·Granted May 19, 1998·77 cites·10 claims
- 0987US9507291B2Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method thereforHIROTA TETSURO·Filed 2015·Granted Nov 29, 2016·2 cites·24 claims
- 1087US6331052B1Ink jet printing apparatusRICOH KK·Filed 1998·Granted Dec 18, 2001·70 cites·51 claims
- 1181US8186799B2Image forming apparatus and impact position displacement correction methodMORINO TETSU·Filed 2008·Granted May 29, 2012·6 cites·11 claims
- 1280US9170233B2Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method thereforHIROTA TETSURO·Filed 2014·Granted Oct 27, 2015·2 cites·26 claims
- 1380US6053597AInk jet recording apparatus and method for automatically changing recording operation mode when interchangeable recording head unit is replacedRICOH KK·Filed 1997·Granted Apr 25, 2000·41 cites·24 claims
- 1478US10228632B2Powder detection device, image forming apparatus, powder detection method, and non-transitory recording mediumYAMAMOTO MITSUFUMI·Filed 2016·Granted Mar 12, 2019·2 cites·20 claims
- 1578US4661822AInk jet printerRICOH KK·Filed 1986·Granted Apr 28, 1987·33 cites·9 claims
- 1677US8259142B2Image forming apparatus with developer passage amount control electrodesHIROTA TETSURO·Filed 2010·Granted Sep 4, 2012·2 cites·6 claims
- 1776US5821953AInk-jet head driving systemRICOH KK·Filed 1996·Granted Oct 13, 1998·34 cites·23 claims
- 1874US8157342B2Liquid-jet device, image forming apparatus, and method for adjusting landing positions of liquid dropletsMORINO TETSU·Filed 2008·Granted Apr 17, 2012·4 cites·19 claims
- 1974US8066348B2Image forming apparatus and defective nozzle detection methodHIROTA TETSURO·Filed 2008·Granted Nov 29, 2011·4 cites·18 claims
- 2074US4644372AInk jet printerRICOH KK·Filed 1985·Granted Feb 17, 1987·21 cites·22 claims
- 2173US9158228B2Development device and image forming apparatus incorporating sameOGAWA YOSHIKO·Filed 2012·Granted Oct 13, 2015·2 cites·15 claims
- 2266US8824935B2Development device, process cartridge incorporating same, and image forming apparatus incorporating sameSEKI HIDEYASU·Filed 2011·Granted Sep 2, 2014·1 cites·19 claims
- 2362US9507290B2Magnetic permeability detector, developing device, image forming apparatus, and oscillation signal frequency calculation method thereforHIROTA TETSURO·Filed 2015·Granted Nov 29, 2016·0 cites·19 claims
- 2457US4620249AApparatus for driving a floppy discRICOH KK·Filed 1982·Granted Oct 28, 1986·11 cites·8 claims
- 2547US10317814B2Powder supply device and image forming apparatus incorporating sameRICOH CO LTD·Filed 2016·Granted Jun 11, 2019·0 cites·18 claims
- 2647US10099876B2Sheet material thickness detection device, sheet material anomaly detection device, sheet material feeding device, and image forming deviceHIROTA TETSURO·Filed 2016·Granted Oct 16, 2018·0 cites·19 claims
- 2744US8929782B2Development device, and image forming apparatus and process cartridge incorporating sameENDOU OSAMU·Filed 2012·Granted Jan 6, 2015·0 cites·9 claims
- 2844US8376494B2Image forming device and image forming apparatusRICOH CO LTD·Filed 2010·Granted Feb 19, 2013·0 cites·17 claims
- 2942US2008231649A1Image forming apparatus, method for correcting displacement of landing positionsKAWABATA KENICHI·Filed 2008·Application pending·0 cites
- 3041US10114323B2Sheet size detector and image processing apparatusHIROTA TETSURO·Filed 2015·Granted Oct 30, 2018·0 cites·19 claims
- 3139US8897681B2Developing device, image forming apparatus, and image forming methodHIROTA TETSURO·Filed 2011·Granted Nov 25, 2014·0 cites·15 claims
- 3236US8594540B2Development device, process cartridge incorporating same, and image forming apparatus incorporating sameHIROTA TETSURO·Filed 2011·Granted Nov 26, 2013·0 cites·19 claims
- 3335US8948638B2Image forming apparatusISHIKURA YUJI·Filed 2011·Granted Feb 3, 2015·0 cites·20 claims
- 3435US8433211B2Developing device, process cartridge, and image forming apparatusHORIKE MASANORI·Filed 2010·Granted Apr 30, 2013·0 cites·19 claims
- 3535US6147766APrinting apparatus for increasing efficiency in transmitting image data between internal control unitsRICOH KK·Filed 1998·Granted Nov 14, 2000·5 cites·10 claims
- 3622US10031016B2Fluid detection apparatus to detect a quantity of fluid using a vibrationSATOH KAZUHO·Filed 2016·Granted Jul 24, 2018·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →