Inventor
KOYANAGI TAKASHI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “KOYANAGI TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
14 patentsUS8798508B2Aug 5, 2014
Developing member, process cartridge, and electrophotographic apparatus
CANON KK38 citations94
US8655222B2Feb 18, 2014
Developing member, process cartridge, and electrophotographic image forming apparatus
CANON KK35 citations94
US9625854B2Apr 18, 2017
Developer carrying member, electrophotographic process cartridge, and electrophotographic image forming apparatus
CANON KK26 citations93
US8768226B2Jul 1, 2014
Developer support member, electrophotographic process cartridge and electrophotographic image forming apparatus
CANON KK28 citations92
US10331054B2Jun 25, 2019
Electrophotographic member, process cartridge and electrophotographic image forming apparatus
CANON KK12 citations84
US9977359B2May 22, 2018
Electrophotographic member, method of producing the same, process cartridge, and electrophotographic apparatus
CANON KK16 citations84
US8874012B2Oct 28, 2014
Developing member, process cartridge and electrophotographic apparatus
CANON KK18 citations84
US10197930B2Feb 5, 2019
Electrophotographic member, process cartridge, and electrophotographic apparatus
CANON KK13 citations80
US10831125B2Nov 10, 2020
Developer carrying member, process cartridge, and electrophotographic apparatus
CANON KK2 citations72
US11156935B2Oct 26, 2021
Developing member, electrophotographic process cartridge, and electrophotographic image forming apparatus
CANON KK1 citations62
US11029622B2Jun 8, 2021
Developer carrying member, process cartridge, and electrophotographic apparatus
CANON KK1 citations61
US12147170B2Nov 19, 2024
Image forming apparatus having toner charging
CANON KK0 citations51
US12405550B2Sep 2, 2025
Developing device, process cartridge, and electrophotographic image forming apparatus
CANON KK0 citations46
US11966174B2Apr 23, 2024
Electrophotographic member, electrophotographic process cartridge, and electrophotographic image forming apparatus
CANON KK0 citations45
NIHON KOHDEN CORP
3 patentsUS12377276B2Aug 5, 2025
Pulse discrimination device and electrocardiogram analyzer
NIHON KOHDEN CORP0 citations58
US11433242B2Sep 6, 2022
Pulse discrimination device and electrocardiogram analyzer
NIHON KOHDEN CORP0 citations58
US12138061B2Nov 12, 2024
Pulse discrimination device and electrocardiogram analyzer
NIHON KOHDEN CORP0 citations48