Inventor
KAWASUMI RYOICHI
JP44 patents
⚠️ This page may combine multiple inventors who share the name “KAWASUMI RYOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
43 patentsUS11082571B2Aug 3, 2021
Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input key
CANON KK3 citations84
US10701224B2Jun 30, 2020
Image forming apparatus having an operation portion with a near field communication portion
CANON KK4 citations84
US10530944B2Jan 7, 2020
Input device performing near field communication with a mobile device and image forming apparatus
CANON KK4 citations84
US10148833B2Dec 4, 2018
Input device performing near field communication with a mobile device and image forming apparatus
CANON KK5 citations84
US7664427B2Feb 16, 2010
Image forming apparatus with locking means
CANON KK10 citations84
US7379687B2May 27, 2008
Image forming apparatus with first and second opening and closing units
CANON KK9 citations84
US7187886B2Mar 6, 2007
Image forming apparatus having a securing member to secure an image forming unit to a housing body
CANON KK14 citations84
US6529703B2Mar 4, 2003
Image forming apparatus having registration rollers of a variable rotating speed
CANON KK13 citations84
US10990059B2Apr 27, 2021
Metal frame of image forming apparatus and image forming apparatus
CANON KK7 citations82
US10990061B2Apr 27, 2021
Image forming apparatus having a duct free of a filter and a duct with a filter
CANON KK2 citations73
US9235161B2Jan 12, 2016
Image forming apparatus
CANON KK4 citations73
US12253810B2Mar 18, 2025
Image forming apparatus
CANON KK1 citations64
US7747191B2Jun 29, 2010
Process cartridge and image forming apparatus
CANON KK5 citations63
US6942210B2Sep 13, 2005
Sheet feeding apparatus and image forming apparatus
CANON KK6 citations63
US12449753B2Oct 21, 2025
Power feed path unit, image forming apparatus, and assembly method for power feed path unit
CANON KK0 citations62
US12399459B2Aug 26, 2025
Image forming apparatus
CANON KK0 citations62
US12399446B2Aug 26, 2025
Image forming apparatus including duct structure that supports light emitting elements for exposing a photoconductor
CANON KK0 citations62
US12393136B2Aug 19, 2025
Image forming apparatus that cools an exposure device
CANON KK0 citations62
US12164240B2Dec 10, 2024
Image forming apparatus including retractable exposure portion
CANON KK1 citations62
US12155799B2Nov 26, 2024
Input device having a near-field detection substrate positioned relative to a touch panel
CANON KK0 citations62
US12105461B2Oct 1, 2024
Image forming apparatus having removable fixing portion and filter holder
CANON KK0 citations62
US12066766B2Aug 20, 2024
Image forming apparatus including duct structure that supports light emitting elements for exposing a photoconductor
CANON KK0 citations62
US12055869B2Aug 6, 2024
Image forming apparatus that cools an exposure device
CANON KK0 citations62
US12032327B2Jul 9, 2024
Image forming apparatus
CANON KK0 citations62
US11994826B2May 28, 2024
Image forming apparatus
CANON KK1 citations62
US11940751B2Mar 26, 2024
Power feed path unit forming an electrical connecting path for power feeding, image forming apparatus, and assembly method for power feed path unit
CANON KK0 citations62
US11849088B2Dec 19, 2023
Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input key
CANON KK0 citations62
US11835876B2Dec 5, 2023
Image forming apparatus having removable duct and filter
CANON KK0 citations62
US11693360B2Jul 4, 2023
Image forming apparatus having fan to suck air through a gap between exterior covers
CANON KK0 citations62
US11601560B2Mar 7, 2023
Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input key
CANON KK0 citations62
US11405516B2Aug 2, 2022
Image forming apparatus having an operation portion with a near field communication portion, a touch panel, and an input key
CANON KK0 citations62
US11300919B2Apr 12, 2022
Image forming apparatus having guide for airflow to filter
CANON KK0 citations62
US11022929B2Jun 1, 2021
Image forming apparatus having guide for airflow through filter
CANON KK1 citations62
US12386308B2Aug 12, 2025
Image forming apparatus including exposure unit and exposure cooling unit
CANON KK0 citations52
US12298708B2May 13, 2025
Image forming apparatus with cooling configuration
CANON KK0 citations52
US12271149B2Apr 8, 2025
Image forming apparatus
CANON KK0 citations52
US11835908B2Dec 5, 2023
Image forming apparatus having a frame body with a first frame and a second frame
CANON KK0 citations52
US9606474B2Mar 28, 2017
Developing device
CANON KK1 citations52
US9152127B2Oct 6, 2015
Image forming apparatus
CANON KK1 citations52
US12535766B2Jan 27, 2026
Image forming apparatus
CANON KK0 citations50
US10474063B2Nov 12, 2019
Image forming apparatus having movable shutter member
CANON KK0 citations42
US9507292B2Nov 29, 2016
Developing device
CANON KK0 citations42
US9500988B2Nov 22, 2016
Developing apparatus
CANON KK0 citations42