Inventor · disambiguated record
Hiromasa Takagi
Also filed as: TAKAGI HIROMASA
116 granted patents·8 pending applications·915 citations·filing 2003–2024
99Inventor score
Top patents by PatentIndex Score
124 records- 0198US7957663B2Heater, fixing unit and image forming apparatusRICOH CO LTD·Filed 2010·Granted Jun 7, 2011·23 cites·17 claims
- 0298US7664410B2Image forming apparatus with control of power to a fixing unitRICOH KK·Filed 2009·Granted Feb 16, 2010·33 cites·19 claims
- 0398US7239821B2Image forming apparatus including a heating unitRICOH KK·Filed 2005·Granted Jul 3, 2007·38 cites·14 claims
- 0497US7885569B2Heater, fixing unit and image forming apparatus operable with a main and auxiliary power supply unitRICOH CO LTD·Filed 2009·Granted Feb 8, 2011·26 cites·28 claims
- 0597US7565087B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2008·Granted Jul 21, 2009·32 cites·11 claims
- 0697US7551869B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Jun 23, 2009·31 cites·21 claims
- 0797US7496309B2Image forming apparatus with auxiliary power sourceRICOH KK·Filed 2007·Granted Feb 24, 2009·26 cites·14 claims
- 0897US7373094B2Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensorRICOH KK·Filed 2006·Granted May 13, 2008·27 cites·19 claims
- 0997US7366432B2Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Apr 29, 2008·30 cites·18 claims
- 1097US7343113B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Mar 11, 2008·35 cites·22 claims
- 1197US7333743B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Feb 19, 2008·37 cites·20 claims
- 1297US7308216B2Image forming apparatus and method to supply power to a fixing deviceRICOH KK·Filed 2005·Granted Dec 11, 2007·38 cites·21 claims
- 1397US7212758B2Image-forming apparatusRICOH KK·Filed 2006·Granted May 1, 2007·27 cites·3 claims
- 1497US7209675B2Image forming apparatusRICOH KK·Filed 2005·Granted Apr 24, 2007·36 cites·3 claims
- 1596US7515845B2Method for supplying power, and fixing and image forming apparatusesRICOH KK·Filed 2005·Granted Apr 7, 2009·26 cites·10 claims
- 1696US7356270B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Apr 8, 2008·27 cites·21 claims
- 1796US7054570B2Image-forming apparatusRICOH KK·Filed 2004·Granted May 30, 2006·59 cites·27 claims
- 1895US7609988B2Heater, fixing unit and image forming apparatus having power supplied from chargeable auxiliary power supplying unit varied per unit timeRICOH KK·Filed 2004·Granted Oct 27, 2009·38 cites·30 claims
- 1994US8886101B2Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the sameKAWATA TEPPEI·Filed 2012·Granted Nov 11, 2014·7 cites·17 claims
- 2094US8725038B2Belt assembly, fixing device, and image forming apparatus incorporating sameYAMAGUCHI YOSHIKI·Filed 2011·Granted May 13, 2014·10 cites·18 claims
- 2194US7130555B2Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensorRICOH KK·Filed 2004·Granted Oct 31, 2006·41 cites·36 claims
- 2294US7116923B2Fuser provided with auxiliary power supply device to operate with varying powerRICOH KK·Filed 2004·Granted Oct 3, 2006·47 cites·13 claims
- 2393US9031439B2Fixing device and image forming deviceHASE TAKAMASA·Filed 2013·Granted May 12, 2015·7 cites·7 claims
- 2493US7212759B2Heating device, fixing device and image forming apparatusRICOH KK·Filed 2004·Granted May 1, 2007·36 cites·15 claims
- 2592US9811031B2Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the sameKAWATA TEPPEI·Filed 2015·Granted Nov 7, 2017·4 cites·35 claims
- 2692US9405250B2Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating sameOGAWA TADASHI·Filed 2015·Granted Aug 2, 2016·5 cites·8 claims
- 2792US9046838B2Fixing device and image forming apparatusARAI YUJI·Filed 2013·Granted Jun 2, 2015·6 cites·23 claims
- 2891US9612556B2Fixing device and image forming apparatusOGINO YASUHIKO·Filed 2016·Granted Apr 4, 2017·5 cites·19 claims
- 2991US9026024B2Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating sameRICOH CO LTD·Filed 2013·Granted May 5, 2015·5 cites·13 claims
- 3091US8929791B2Fixing device and endless belt assemblyISHII KENJI·Filed 2013·Granted Jan 6, 2015·6 cites·20 claims
- 3189US9037008B2Fixing device and image forming apparatus including sameHASE TAKAMASA·Filed 2013·Granted May 19, 2015·4 cites·15 claims
- 3289US8655211B2Fixing device and image forming apparatus incorporating sameFUJIMOTO IPPEI·Filed 2011·Granted Feb 18, 2014·5 cites·16 claims
- 3389US7603049B2Image formation apparatus and associated method of storing powerRICOH KK·Filed 2005·Granted Oct 13, 2009·34 cites·11 claims
- 3488US9014611B2Fixing device and image forming apparatus with sameISHII KENJI·Filed 2014·Granted Apr 21, 2015·4 cites·17 claims
- 3587US9599940B2Fixing device with nip forming member having a high thermal-conductive layer with a low thermal conductive portionYAMANO MOTOYOSHI·Filed 2015·Granted Mar 21, 2017·4 cites·16 claims
- 3687US9069304B2Image forming apparatusSESHITA TAKUYA·Filed 2013·Granted Jun 30, 2015·4 cites·18 claims
- 3786US7953338B2Heating apparatus, fixing apparatus, and image forming apparatus which charges an auxiliary power unit to less than a maximum value in a standby statusRICOH CO LTD·Filed 2006·Granted May 31, 2011·8 cites·22 claims
- 3885US9207596B2Image forming apparatus including a fixing deviceRICOH CO LTD·Filed 2014·Granted Dec 8, 2015·2 cites·18 claims
- 3985US8953994B2Fixing device and image forming apparatus incorporating sameIWAYA NAOKI·Filed 2012·Granted Feb 10, 2015·3 cites·8 claims
- 4084US10935911B2Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the sameRICOH CO LTD·Filed 2017·Granted Mar 2, 2021·1 cites·57 claims
- 4184US9529309B2Fixing device and image forming apparatus including a multi-layer nip formation padISHII KENJI·Filed 2014·Granted Dec 27, 2016·3 cites·20 claims
- 4284US9152106B2Fixing device and image forming apparatus including sameYAMAGUCHI YOSHIKI·Filed 2013·Granted Oct 6, 2015·3 cites·16 claims
- 4384US8855506B2Image forming apparatusHASE TAKAMASA·Filed 2013·Granted Oct 7, 2014·2 cites·8 claims
- 4483US9874839B2Fixing device and image forming apparatusSAWADA KAZUNARI·Filed 2016·Granted Jan 23, 2018·2 cites·21 claims
- 4583US9618886B2NIP formation assembly, fixing device, and image forming apparatusSETO TAKASHI·Filed 2015·Granted Apr 11, 2017·2 cites·34 claims
- 4683US9008558B2Separator and separation device, fixing device, and image forming apparatus incorporating sameSAITO KAZUYA·Filed 2012·Granted Apr 14, 2015·3 cites·20 claims
- 4782US8903296B2Fixing device and image forming apparatus incorporating sameSHIMOKAWA TOSHIHIKO·Filed 2011·Granted Dec 2, 2014·3 cites·8 claims
- 4882US8682218B2Fixing device and image forming apparatus incorporating sameYAMAGUCHI YOSHIKI·Filed 2011·Granted Mar 25, 2014·3 cites·8 claims
- 4982US7352987B2Fixing device and image forming apparatus for holding a recording medium by electrostatic forceRICOH KK·Filed 2003·Granted Apr 1, 2008·20 cites·20 claims
- 5081US9618887B2Fixing device and image forming apparatusTAKAGI HIROMASA·Filed 2016·Granted Apr 11, 2017·2 cites·19 claims
Showing the top 50 of 124 patent records by PatentIndex Score.
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