Inventor
TAKAHASHI HIROBUMI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TAKAHASHI HIROBUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KASEI KK
5 patentsUS6771920B2Aug 3, 2004
Charging roller including a conductive cover layer being formed of a seamless tube, process cartridge and electrophotographic image forming apparatus including such a charging roller
CANON KASEI KK25 citations92
US7171142B2Jan 30, 2007
Conductive roller, and process cartridge and electrophotographic apparatus which have conductive roller
CANON KASEI KK16 citations81
US7171141B2Jan 30, 2007
Charging roller, process cartridge and electrophotographic apparatus
CANON KASEI KK8 citations73
US7209683B2Apr 24, 2007
Charging roller featuring specified ratio of storage elastic modulus and dynamic viscoelasticity values and process cartridge and electrophotographic apparatus featuring the same
CANON KASEI KK2 citations60
US7283771B2Oct 16, 2007
Charging roller
CANON KASEI KK0 citations49
CANON KK
4 patentsUS10558149B2Feb 11, 2020
Roller for electrphotography and production method thereof, and electrophotographic image forming apparatus
CANON KK2 citations72
US9983516B2May 29, 2018
Roller for electrophotography and production method thereof, and electrophotographic image forming apparatus
CANON KK2 citations72
US12306576B2May 20, 2025
Electroconductive member, process cartridge, and device for forming electrophotographic image
CANON KK0 citations59
US12346052B2Jul 1, 2025
Electrophotographic electro-conductive member, electrophotographic image forming apparatus, and process cartridge
CANON KK0 citations48