Inventor · disambiguated record
Masami Okamoto
Also filed as: OKAMOTO MASAMI
62 granted patents·9 pending applications·1,127 citations·filing 1990–2023
99Inventor score
Top patents by PatentIndex Score
71 records- 0198US7957663B2Heater, fixing unit and image forming apparatusRICOH CO LTD·Filed 2010·Granted Jun 7, 2011·23 cites·17 claims
- 0298US7239821B2Image forming apparatus including a heating unitRICOH KK·Filed 2005·Granted Jul 3, 2007·38 cites·14 claims
- 0397US7885569B2Heater, 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
- 0497US7565087B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2008·Granted Jul 21, 2009·32 cites·11 claims
- 0597US7551869B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Jun 23, 2009·31 cites·21 claims
- 0697US7496309B2Image forming apparatus with auxiliary power sourceRICOH KK·Filed 2007·Granted Feb 24, 2009·26 cites·14 claims
- 0797US7373094B2Fixing 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
- 0897US7366432B2Fixing 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
- 0997US7343113B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Mar 11, 2008·35 cites·22 claims
- 1097US7333743B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Feb 19, 2008·37 cites·20 claims
- 1197US7308216B2Image forming apparatus and method to supply power to a fixing deviceRICOH KK·Filed 2005·Granted Dec 11, 2007·38 cites·21 claims
- 1297US7212758B2Image-forming apparatusRICOH KK·Filed 2006·Granted May 1, 2007·27 cites·3 claims
- 1397US7209675B2Image forming apparatusRICOH KK·Filed 2005·Granted Apr 24, 2007·36 cites·3 claims
- 1496US7515845B2Method for supplying power, and fixing and image forming apparatusesRICOH KK·Filed 2005·Granted Apr 7, 2009·26 cites·10 claims
- 1596US7356270B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2005·Granted Apr 8, 2008·27 cites·21 claims
- 1696US7054570B2Image-forming apparatusRICOH KK·Filed 2004·Granted May 30, 2006·59 cites·27 claims
- 1795US7609988B2Heater, 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
- 1894US7130555B2Fixing 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
- 1994US7116923B2Fuser provided with auxiliary power supply device to operate with varying powerRICOH KK·Filed 2004·Granted Oct 3, 2006·47 cites·13 claims
- 2093US7212759B2Heating device, fixing device and image forming apparatusRICOH KK·Filed 2004·Granted May 1, 2007·36 cites·15 claims
- 2193US6394446B1Reverse feeding deviceRICOH KK·Filed 2000·Granted May 28, 2002·35 cites·15 claims
- 2292US7173080B2Biodegradable resin composition for molding and object molded or formed from the sameUNITIKA LTD·Filed 2002·Granted Feb 6, 2007·65 cites·14 claims
- 2389US9733600B2Fixing device and image forming apparatusNOZAWA KENJI·Filed 2016·Granted Aug 15, 2017·4 cites·17 claims
- 2489US7683297B2Electric power supply control device, heating device and fixing deviceRICOH KK·Filed 2006·Granted Mar 23, 2010·11 cites·13 claims
- 2589US7603049B2Image formation apparatus and associated method of storing powerRICOH KK·Filed 2005·Granted Oct 13, 2009·34 cites·11 claims
- 2688US9244431B2Fixing device and image forming apparatusKIKUSHIMA YUUKI·Filed 2015·Granted Jan 26, 2016·4 cites·20 claims
- 2787US6411795B2Image forming apparatus with a two-sides image forming operationRICOH KK·Filed 2001·Granted Jun 25, 2002·33 cites·34 claims
- 2886US7098263B2Thermoplastic resin composition, molded article, and process for producing the sameTEIJIN CHEMICALS LTD·Filed 2002·Granted Aug 29, 2006·26 cites·37 claims
- 2985US9316979B2Fixing device and image forming apparatusNOZAWA KENJI·Filed 2015·Granted Apr 19, 2016·3 cites·19 claims
- 3085US7449510B2Biodegradable polyester resin composition, process for producing the same and foamed article and molded article using the sameUNITIKA LTD·Filed 2003·Granted Nov 11, 2008·27 cites·10 claims
- 3183US8503898B2Fixing device and image forming apparatusOKAMOTO MASAMI·Filed 2011·Granted Aug 6, 2013·3 cites·8 claims
- 3282US8027627B2Fixing device and image forming apparatus with improved mechanism for stably applying oil for fixingRICOH CO LTD·Filed 2009·Granted Sep 27, 2011·7 cites·7 claims
- 3382US5129273AActuatorTEIJIN SEIKI CO LTD·Filed 1990·Granted Jul 14, 1992·33 cites·9 claims
- 3480US9268276B2Fixing device and image forming apparatus that include a separator disposed downstream from a fixing nipHIROSE FUMIHIRO·Filed 2015·Granted Feb 23, 2016·2 cites·18 claims
- 3580US8112022B2Fixing device, image forming apparatus, and image fixing method capable of stably applying oil for fixing without adhering oil to sheetOKAMOTO MASAMI·Filed 2009·Granted Feb 7, 2012·6 cites·19 claims
- 3678US5193408AActuatorTEIJIN SEIKI CO LTD·Filed 1992·Granted Mar 16, 1993·29 cites·3 claims
- 3777US8023850B2Image forming apparatus capable of stably applying oil for fixingRICOH CO LTD·Filed 2009·Granted Sep 20, 2011·5 cites·9 claims
- 3876US7463841B2Heating device, fuser device, and image forming apparatus including power supply devices for supplying power to a heating unitRICOH KK·Filed 2005·Granted Dec 9, 2008·4 cites·8 claims
- 3976US6861468B2Polyester resin compositionFUJI PHOTO FILM CO LTD·Filed 2003·Granted Mar 1, 2005·11 cites·15 claims
- 4075US7359653B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2004·Granted Apr 15, 2008·14 cites·9 claims
- 4171US5572868AExhaust manifoldAISIN TAKAOKA LTD·Filed 1995·Granted Nov 12, 1996·38 cites·14 claims
- 4270US9389560B2Fixing device including a separator to separate a recording medium from a pressure rotator and image forming apparatus including the fixing deviceHIROSE FUMIHIRO·Filed 2015·Granted Jul 12, 2016·1 cites·20 claims
- 4369US6239864B1Image forming apparatus with a paper positioning deviceRICOH KK·Filed 1999·Granted May 29, 2001·19 cites·8 claims
- 4462US6950766B2Plant monitoring apparatus and storage mediumTOSHIBA KK·Filed 2001·Granted Sep 27, 2005·8 cites·8 claims
- 4560US6821464B2Process for producing polymer/filler composite materialTOYODA CHUO KENKYUSHO KK·Filed 2002·Granted Nov 23, 2004·3 cites·19 claims
- 4659US9519249B2Fixing device and image forming apparatusHIROSE FUMIHIRO·Filed 2015·Granted Dec 13, 2016·0 cites·20 claims
- 4759US2024201468A1Lens deviceFUJIFILM CORP·Filed 2023·Application pending·0 cites
- 4857US9207633B2Fixing device and image forming apparatus incorporating sameOKAMOTO MASAMI·Filed 2014·Granted Dec 8, 2015·0 cites·20 claims
- 4955US10481530B2Separation member, separation device, fixing device, and image forming apparatusRICOH CO LTD·Filed 2018·Granted Nov 19, 2019·0 cites·15 claims
- 5055US10394169B2Fixing device and image forming apparatusRICOH CO LTD·Filed 2017·Granted Aug 27, 2019·0 cites·21 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →