P

Inventor

MAEDA MASAFUMI

JP41 patents
⚠️ This page may combine multiple inventors who share the name “MAEDA MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

27 patents
US7283145B2Oct 16, 2007

Image heating apparatus and heater therefor

CANON KK65 citations97
US6922534B2Jul 26, 2005

Process cartridge and electrophotographic image forming apparatus having electrical connection for memory

CANON KK67 citations96
US7469120B2Dec 23, 2008

Image heating apparatus

CANON KK21 citations93
US7366455B2Apr 29, 2008

Image fixing apparatus with heater and heater holder contacting the heater

CANON KK44 citations93
US9229388B2Jan 5, 2016

Fixing device

CANON KK16 citations92
US9983522B2May 29, 2018

Fixing device

CANON KK6 citations84
US9507303B2Nov 29, 2016

Fixing device

CANON KK10 citations84
US9235172B2Jan 12, 2016

Image fixing apparatus

CANON KK8 citations84
US9703242B2Jul 11, 2017

Fixing apparatus

CANON KK3 citations73
US9671745B2Jun 6, 2017

Image forming apparatus

CANON KK2 citations73
US9519252B2Dec 13, 2016

Fixing device

CANON KK6 citations73
US9454118B2Sep 27, 2016

Fixing apparatus

CANON KK3 citations73
US9335726B2May 10, 2016

Image forming apparatus having a transfer unit frame

CANON KK3 citations73
US9195212B2Nov 24, 2015

Color electrophotographic image forming apparatus having movable main body electrical contacts

CANON KK4 citations73
US9141038B2Sep 22, 2015

Image forming apparatus

CANON KK3 citations63
US11953853B2Apr 9, 2024

Image forming apparatus

CANON KK1 citations62
US11036169B2Jun 15, 2021

Fixing device

CANON KK0 citations52
US9075353B2Jul 7, 2015

Image forming apparatus having endless belt contact member

CANON KK1 citations52
US12411441B2Sep 9, 2025

Temperature detection apparatus having a base member that moves in a thickness direction of a heater, fixing apparatus, and image forming apparatus

CANON KK0 citations51
US12353149B2Jul 8, 2025

Temperature detection device, fixing apparatus, and image forming apparatus

CANON KK0 citations51
US12061429B2Aug 13, 2024

Heater, heating device, and image forming apparatus

CANON KK0 citations51
US7257340B2Aug 14, 2007

Image forming apparatus featuring a controller for switching a first transfer bias to a second smaller transfer bias while the print material is passing through a transfer nip portion

CANON KK0 citations51
US7058322B2Jun 6, 2006

Transfer bias control method for image forming apparatus using electrophotographic process

CANON KK0 citations51
US10416599B2Sep 17, 2019

Fixing device having a supporting portion that includes first and second opposing surfaces that oppose an inner surface of a film and engaging surfaces that engage with a frame

CANON KK0 citations42
US10338503B2Jul 2, 2019

Fixing device including rotary member to suppress vaporized component escape

CANON KK0 citations42
US10642200B2May 5, 2020

Fixing device with tiltable spacer between heater and safety

CANON KK0 citations41
US9042800B2May 26, 2015

Fixing device

CANON KK0 citations41

SCREEN HOLDINGS CO LTD

4 patents

DAINIPPON SCREEN MFG

2 patents

MAEDA MASAFUMI

2 patents

MORI NOBUYUKI

1 patent

KAWASAKI STEEL CO

1 patent

MAKIHIRA TOMOYUKI

1 patent

SHINSEI CO LTD

1 patent

IIS MATERIALS CORP LTD

1 patent

UEMURA JUNYA

1 patent