Inventor
MATSUOKA YOHEI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “MATSUOKA YOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI CHEM CORP
12 patentsUS10042310B2Aug 7, 2018
End member, photosensitive drum unit, developing roller unit, and process cartridge
MITSUBISHI CHEM CORP7 citations82
US10571850B2Feb 25, 2020
End member, photoreceptor drum unit, and process cartridge
MITSUBISHI CHEM CORP4 citations71
US10534308B2Jan 14, 2020
Transmission device for a photosensitive drum
MITSUBISHI CHEM CORP4 citations71
US10203647B2Feb 12, 2019
Bearing member, end member, photoreceptor drum unit, developing roller unit, process cartridge, and manufacturing method of bearing member
MITSUBISHI CHEM CORP0 citations51
US10007223B2Jun 26, 2018
Bearing member, end member, photoreceptor drum unit, developing roller unit, process cartridge, and manufacturing method of bearing member
MITSUBISHI CHEM CORP0 citations51
US10146167B2Dec 4, 2018
Shaft member, end member, photoreceptor drum unit, developing roller unit, and process cartridge
MITSUBISHI CHEM CORP0 citations50
US10133235B2Nov 20, 2018
Shaft member, end member, photoreceptor drum unit, developing roller unit, and process cartridge
MITSUBISHI CHEM CORP0 citations50
US9804551B2Oct 31, 2017
End member which allows transmission of rotary power
MITSUBISHI CHEM CORP0 citations50
US9494917B2Nov 15, 2016
Process cartridge for image forming apparatus and method of separating process cartridge from image forming apparatus
MITSUBISHI CHEM CORP0 citations50
US10459403B2Oct 29, 2019
End member, photoreceptor drum unit, and process cartridge
MITSUBISHI CHEM CORP0 citations40
US10254702B2Apr 9, 2019
End member, photosensitive drum unit, and process cartridge
MITSUBISHI CHEM CORP0 citations40
US10012951B2Jul 3, 2018
End member, photoreceptor drum unit, developing roller unit, and process cartridge
MITSUBISHI CHEM CORP0 citations40