Inventor · disambiguated record
Yasumasa Ohtsuka
Also filed as: OHTSUKA YASUMASA
45 granted patents·2 pending applications·1,513 citations·filing 1984–2025
99Inventor score
Top patents by PatentIndex Score
47 records- 0197US5331385AFixing rotatable member having conductive parting layer and fixing apparatus using sameCANON KK·Filed 1991·Granted Jul 19, 1994·80 cites·8 claims
- 0297US4719489ARecording apparatus having material feed mode dependent fixing controlCANON KK·Filed 1987·Granted Jan 12, 1988·74 cites·16 claims
- 0396US5552582AImage heating apparatusCANON KK·Filed 1995·Granted Sep 3, 1996·90 cites·30 claims
- 0495US5464964AImage heating apparatus changing set temperature in accordance with temperature of heaterCANON KK·Filed 1992·Granted Nov 7, 1995·69 cites·27 claims
- 0595US5253022AImage forming apparatusCANON KK·Filed 1990·Granted Oct 12, 1993·62 cites·40 claims
- 0695US5179397AImage forming apparatus with constant voltage and constant current controlCANON KK·Filed 1990·Granted Jan 12, 1993·65 cites·128 claims
- 0794US6377777B1Fluorine-containing resin-coated pressure roller and heat-fixing deviceCANON KK·Filed 2000·Granted Apr 23, 2002·56 cites·9 claims
- 0893US5444521AImage fixing device capable of controlling heating overshootCANON KK·Filed 1992·Granted Aug 22, 1995·49 cites·11 claims
- 0993US5235386ACharging device having charging member, process cartridge and image forming apparatusCANON KK·Filed 1992·Granted Aug 10, 1993·47 cites·20 claims
- 1093US5138390ACleaning sheet for fixating rotational member and image forming apparatus having fixating rotational memberCANON KK·Filed 1991·Granted Aug 11, 1992·48 cites·36 claims
- 1192US5534987AFixing apparatus with variable fixing temperatureCANON KK·Filed 1995·Granted Jul 9, 1996·62 cites·9 claims
- 1292US5365314AImage heating apparatus capable of changing duty ratioCANON KK·Filed 1993·Granted Nov 15, 1994·44 cites·16 claims
- 1392US5177549AImage forming apparatus supplied with controllable bias voltageCANON KK·Filed 1991·Granted Jan 5, 1993·45 cites·8 claims
- 1491US5552874AImage fixing apparatusCANON KK·Filed 1994·Granted Sep 3, 1996·40 cites·21 claims
- 1590US5568240AImage heating apparatusCANON KK·Filed 1994·Granted Oct 22, 1996·60 cites·27 claims
- 1690US5253024AFixing apparatus with rectifier elementCANON KK·Filed 1991·Granted Oct 12, 1993·41 cites·24 claims
- 1789US5852763AImage heating apparatusCANON KK·Filed 1997·Granted Dec 22, 1998·46 cites·35 claims
- 1889US5669039AImage heating apparatus capable of varying feeding intervals between recording materialsCANON KK·Filed 1996·Granted Sep 16, 1997·46 cites·7 claims
- 1989US5153654AImage forming apparatus having transfer member for carrying transfer materialCANON KK·Filed 1991·Granted Oct 6, 1992·38 cites·11 claims
- 2088US5801360AImage fixing apparatusCANON KK·Filed 1995·Granted Sep 1, 1998·45 cites·6 claims
- 2188US5592276AImage fixing device with heater responsive to thermal stressCANON KK·Filed 1994·Granted Jan 7, 1997·35 cites·30 claims
- 2287US6347211B2Fixing apparatus preventing leakage of electric current from inner surface of fixing rollerCANON KK·Filed 1999·Granted Feb 12, 2002·34 cites·5 claims
- 2385US10997422B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2019·Granted May 4, 2021·5 cites·9 claims
- 2483US6005594AFixing apparatus having a fixing roller with a non-adhesive surface layerCANON KK·Filed 1995·Granted Dec 21, 1999·30 cites·30 claims
- 2581US12299993B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2023·Granted May 13, 2025·0 cites·12 claims
- 2681US12223730B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2023·Granted Feb 11, 2025·0 cites·12 claims
- 2781US12131547B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2023·Granted Oct 29, 2024·0 cites·20 claims
- 2880US4707748AImage recording apparatusCANON KK·Filed 1986·Granted Nov 17, 1987·22 cites·14 claims
- 2980US2025285444A1Information processing apparatus, information processing method, and programNEC CORP·Filed 2025·Application pending·0 cites
- 3079US4725854ALaser emitting apparatus and laser beam printer using sameCANON KK·Filed 1986·Granted Feb 16, 1988·24 cites·9 claims
- 3178US12272145B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2023·Granted Apr 8, 2025·0 cites·12 claims
- 3276US5862445AImage heating apparatus using inductive heatingCANON KK·Filed 1995·Granted Jan 19, 1999·39 cites·32 claims
- 3375US6469279B1Image heating apparatus and heaterCANON KK·Filed 1997·Granted Oct 22, 2002·38 cites·38 claims
- 3474US5778293AImage heating apparatusCANON KK·Filed 1996·Granted Jul 7, 1998·31 cites·4 claims
- 3573US4626096AImage forming apparatus for forming a visual image in accordance with image signalsCANON KK·Filed 1985·Granted Dec 2, 1986·26 cites·28 claims
- 3671US5697037AFixing device and film for use in itCANON KK·Filed 1996·Granted Dec 9, 1997·21 cites·15 claims
- 3769US12183082B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2021·Granted Dec 31, 2024·0 cites·9 claims
- 3869US6323460B1Image heating apparatus in which first and second heating resistors are within a width of a nip through which a recording material passesCANON KK·Filed 1997·Granted Nov 27, 2001·19 cites·34 claims
- 3969US5860052AImage heating apparatusCANON KK·Filed 1996·Granted Jan 12, 1999·20 cites·31 claims
- 4065US5471288AImage heating apparatus and heating filmCANON KK·Filed 1994·Granted Nov 28, 1995·22 cites·39 claims
- 4157US5659869AImage fixing apparatus having pressure roller with fluorine surface active agentCANON KK·Filed 1994·Granted Aug 19, 1997·11 cites·16 claims
- 4256US5280155AImage heater having film guide with projectionsCANON KABUSHIHI KAISHA·Filed 1992·Granted Jan 18, 1994·11 cites·8 claims
- 4352US11494579B2Information processing apparatus, information processing method, and programNEC CORP·Filed 2017·Granted Nov 8, 2022·0 cites·17 claims
- 4446US4563694AImage information recording apparatusCANON KK·Filed 1984·Granted Jan 7, 1986·6 cites·24 claims
- 4539US4965747AImage forming apparatusCANON KK·Filed 1989·Granted Oct 23, 1990·6 cites·58 claims
- 4638US4682876AInformation recording apparatusCANON KK·Filed 1986·Granted Jul 28, 1987·6 cites·5 claims
- 4731US2002143893A1Information processing apparatus, information processing method, program, and storage medium product for distribution of image forming control softwareFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →