Inventor · disambiguated record
Ryoichi Kawasumi
Also filed as: KAWASUMI RYOICHI
43 granted patents·12 pending applications·97 citations·filing 2001–2025
97Inventor score
Top patents by PatentIndex Score
55 records- 0195US10990059B2Metal frame of image forming apparatus and image forming apparatusCANON KK·Filed 2020·Granted Apr 27, 2021·7 cites·13 claims
- 0294US11082571B2Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input keyCANON KK·Filed 2020·Granted Aug 3, 2021·3 cites·12 claims
- 0392US12253810B2Image forming apparatusCANON KK·Filed 2023·Granted Mar 18, 2025·1 cites·9 claims
- 0492US10701224B2Image forming apparatus having an operation portion with a near field communication portionCANON KK·Filed 2019·Granted Jun 30, 2020·4 cites·9 claims
- 0592US10530944B2Input device performing near field communication with a mobile device and image forming apparatusCANON KK·Filed 2018·Granted Jan 7, 2020·4 cites·13 claims
- 0692US10148833B2Input device performing near field communication with a mobile device and image forming apparatusCANON KK·Filed 2017·Granted Dec 4, 2018·5 cites·20 claims
- 0792US2025348019A1Image forming apparatus that cools an exposure deviceCANON KK·Filed 2025·Application pending·0 cites
- 0891US7187886B2Image forming apparatus having a securing member to secure an image forming unit to a housing bodyCANON KK·Filed 2005·Granted Mar 6, 2007·14 cites·9 claims
- 0991US2025348018A1Image forming apparatus including duct structure that supports light emitting elements for exposing a photoconductorCANON KK·Filed 2025·Application pending·0 cites
- 1089US12399446B2Image forming apparatus including duct structure that supports light emitting elements for exposing a photoconductorCANON KK·Filed 2024·Granted Aug 26, 2025·0 cites·14 claims
- 1189US12393136B2Image forming apparatus that cools an exposure deviceCANON KK·Filed 2024·Granted Aug 19, 2025·0 cites·5 claims
- 1289US12164240B2Image forming apparatus including retractable exposure portionCANON KK·Filed 2023·Granted Dec 10, 2024·1 cites·12 claims
- 1389US11994826B2Image forming apparatusCANON KK·Filed 2023·Granted May 28, 2024·1 cites·5 claims
- 1488US7664427B2Image forming apparatus with locking meansCANON KK·Filed 2007·Granted Feb 16, 2010·10 cites·9 claims
- 1586US9235161B2Image forming apparatusCANON KK·Filed 2013·Granted Jan 12, 2016·4 cites·9 claims
- 1686US7379687B2Image forming apparatus with first and second opening and closing unitsCANON KK·Filed 2005·Granted May 27, 2008·9 cites·8 claims
- 1785US2025047794A1Input device and image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 1884US12066766B2Image forming apparatus including duct structure that supports light emitting elements for exposing a photoconductorCANON KK·Filed 2023·Granted Aug 20, 2024·0 cites·11 claims
- 1984US10990061B2Image forming apparatus having a duct free of a filter and a duct with a filterCANON KK·Filed 2019·Granted Apr 27, 2021·2 cites·9 claims
- 2083US12155799B2Input device having a near-field detection substrate positioned relative to a touch panelCANON KK·Filed 2023·Granted Nov 26, 2024·0 cites·15 claims
- 2183US12055869B2Image forming apparatus that cools an exposure deviceCANON KK·Filed 2023·Granted Aug 6, 2024·0 cites·9 claims
- 2282US12399459B2Image forming apparatusCANON KK·Filed 2024·Granted Aug 26, 2025·0 cites·9 claims
- 2381US2024419118A1Image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 2480US12449753B2Power feed path unit, image forming apparatus, and assembly method for power feed path unitCANON KK·Filed 2024·Granted Oct 21, 2025·0 cites·8 claims
- 2580US11849088B2Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input keyCANON KK·Filed 2023·Granted Dec 19, 2023·0 cites·6 claims
- 2680US11022929B2Image forming apparatus having guide for airflow through filterCANON KK·Filed 2020·Granted Jun 1, 2021·1 cites·10 claims
- 2780US2025370397A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 2880US2025377624A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 2980US2025377604A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 3079US12105461B2Image forming apparatus having removable fixing portion and filter holderCANON KK·Filed 2023·Granted Oct 1, 2024·0 cites·8 claims
- 3178US11601560B2Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input keyCANON KK·Filed 2022·Granted Mar 7, 2023·0 cites·8 claims
- 3277US2025181006A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 3376US8971756B2Image forming apparatus and connecting methodKAWASUMI RYOICHI·Filed 2012·Granted Mar 3, 2015·5 cites·23 claims
- 3476US7747191B2Process cartridge and image forming apparatusCANON KK·Filed 2005·Granted Jun 29, 2010·5 cites·14 claims
- 3574US11405516B2Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input keyCANON KK·Filed 2021·Granted Aug 2, 2022·0 cites·12 claims
- 3674US2025060688A1Image forming apparatus including retractable exposure portionCANON KK·Filed 2024·Application pending·0 cites
- 3773US12032327B2Image forming apparatusCANON KK·Filed 2023·Granted Jul 9, 2024·0 cites·14 claims
- 3873US6529703B2Image forming apparatus having registration rollers of a variable rotating speedCANON KK·Filed 2001·Granted Mar 4, 2003·13 cites·11 claims
- 3973US2025244715A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 4072US12298708B2Image forming apparatus with cooling configurationCANON KK·Filed 2023·Granted May 13, 2025·0 cites·13 claims
- 4170US9606474B2Developing deviceCANON KK·Filed 2015·Granted Mar 28, 2017·1 cites·3 claims
- 4269US11940751B2Power feed path unit forming an electrical connecting path for power feeding, image forming apparatus, and assembly method for power feed path unitCANON KK·Filed 2021·Granted Mar 26, 2024·0 cites·5 claims
- 4369US9152127B2Image forming apparatusCANON KK·Filed 2014·Granted Oct 6, 2015·1 cites·11 claims
- 4467US11835876B2Image forming apparatus having removable duct and filterCANON KK·Filed 2020·Granted Dec 5, 2023·0 cites·13 claims
- 4567US11300919B2Image forming apparatus having guide for airflow to filterCANON KK·Filed 2021·Granted Apr 12, 2022·0 cites·14 claims
- 4663US11693360B2Image forming apparatus having fan to suck air through a gap between exterior coversCANON KK·Filed 2022·Granted Jul 4, 2023·0 cites·7 claims
- 4761US2025091834A1Stacking apparatus and image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 4860US6942210B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2003·Granted Sep 13, 2005·6 cites·6 claims
- 4958US12386308B2Image forming apparatus including exposure unit and exposure cooling unitCANON KK·Filed 2023·Granted Aug 12, 2025·0 cites·6 claims
- 5054US12271149B2Image forming apparatusCANON KK·Filed 2023·Granted Apr 8, 2025·0 cites·11 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →