Inventor · disambiguated record
Chikara Hiraoka
Also filed as: HIRAOKA CHIKARA
24 granted patents·2 pending applications·377 citations·filing 1993–2022
96Inventor score
Top patents by PatentIndex Score
26 records- 0197US5499087AHeat fixing device and electrophotographic apparatus incorporating the same having a PTC heating element received in a recess of a holderHITACHI LTD·Filed 1993·Granted Mar 12, 1996·88 cites·23 claims
- 0295US7298981B2Fixing device and image forming apparatus with guide having adjustable biasing angleRICOH PRINTING SYS LTD·Filed 2005·Granted Nov 20, 2007·23 cites·11 claims
- 0393US8131197B2Fixing device and electro photographic apparatus using the sameHIRAOKA CHIKARA·Filed 2008·Granted Mar 6, 2012·21 cites·20 claims
- 0491US8867942B2Lever switcher with mechanism for minimizing mechanical shock and sound and fixing device and image forming apparatus incorporating lever switcherIKEDA TAMOTSU·Filed 2012·Granted Oct 21, 2014·6 cites·20 claims
- 0591US7167670B2Electro-photographic apparatus with a heating roller and pressurizing memberRICOH PRINTING SYS LTD·Filed 2005·Granted Jan 23, 2007·14 cites·3 claims
- 0691US5778294AElectrophotographic apparatus and belt fixing device with non-uniform nip pressureHITACHI LTD·Filed 1996·Granted Jul 7, 1998·59 cites·21 claims
- 0790US6094549AElectrograph apparatus enabling removal of offensive substancesHITACHI LTD·Filed 1998·Granted Jul 25, 2000·55 cites·11 claims
- 0884US8073375B2Fixing unit and image forming apparatus having the sameHIRAOKA CHIKARA·Filed 2008·Granted Dec 6, 2011·8 cites·8 claims
- 0983US8204421B2Fusing apparatus and image forming apparatusHIRAOKA CHIKARA·Filed 2010·Granted Jun 19, 2012·4 cites·13 claims
- 1083US7406287B2Fixing device and image forming apparatus provided with fixing deviceRICOH PRINTING SYS LTD·Filed 2007·Granted Jul 29, 2008·8 cites·12 claims
- 1180US9201394B2Image forming apparatus and air flow path thereinHIRAOKA CHIKARA·Filed 2011·Granted Dec 1, 2015·3 cites·17 claims
- 1280US7761044B2Fixing device and image forming apparatus using the sameRICOH KK·Filed 2006·Granted Jul 20, 2010·6 cites·7 claims
- 1380US7142803B2Fixing device and image forming apparatusRICOH PRINTING SYS LTD·Filed 2004·Granted Nov 28, 2006·20 cites·20 claims
- 1476US6928257B2Image forming and recording apparatus with three pressure membersRICOH PRINTING SYS LTD·Filed 2003·Granted Aug 9, 2005·16 cites·10 claims
- 1575US7970311B2Developing device and image forming apparatus using the sameRICOH CO LTD·Filed 2007·Granted Jun 28, 2011·4 cites·17 claims
- 1674US7477867B2Fixing device having cleaner and temperature detectorRICOH PRINTING SYS LTD·Filed 2005·Granted Jan 13, 2009·4 cites·17 claims
- 1767US8699929B2Guide device with mechanism capable of minimizing damage to toner image and recording medium and fixing device and image forming apparatus incorporating sameSAKAYA KOHTA·Filed 2012·Granted Apr 15, 2014·1 cites·15 claims
- 1866US8798517B2Sheet supplying device and image forming apparatus incorporating sameMATSUYAMA YASUO·Filed 2011·Granted Aug 5, 2014·2 cites·14 claims
- 1964US6130408ARecording apparatus with conveyed recording sheet heated by movable heaterHITACHI LTD·Filed 1998·Granted Oct 10, 2000·16 cites·6 claims
- 2060US8874021B2Media guide mechanism, fixing device and image forming apparatus incorporating sameSAKAYA KOHTA·Filed 2012·Granted Oct 28, 2014·1 cites·17 claims
- 2159US6661994B2Electrophotographic image forming systemHITACHI LTD·Filed 2002·Granted Dec 9, 2003·6 cites·5 claims
- 2259US6400923B1Fixing device improved in offset-preventionHITACHI LTD·Filed 2000·Granted Jun 4, 2002·8 cites·19 claims
- 2351US7231158B2Image forming apparatus having a fixing device with improved temperature detection featuresRICOH PRINTING SYS LTD·Filed 2004·Granted Jun 12, 2007·4 cites·20 claims
- 2451US2023005577A1Health data management system, health data measurement apparatus, and health data management methodSUGIYAMA HIROYUKI·Filed 2022·Application pending·0 cites
- 2540US9116476B2Fixing device and image forming apparatusTAKAHASHI YOSHIHARU·Filed 2011·Granted Aug 25, 2015·0 cites·17 claims
- 2634US2002025201A1Electrophotographic image forming systemFiled 2001·Application pending·0 cites
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