Inventor
SAKAI KENGO
JP17 patents
⚠️ This page may combine multiple inventors who share the name “SAKAI KENGO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
14 patentsUS11204566B2Dec 21, 2021
Image forming apparatus and developing cartridge
CANON KK6 citations84
US10427867B2Oct 1, 2019
Packing member and cartridge packed in the packing member
CANON KK11 citations83
US9733612B2Aug 15, 2017
Cartridge package and packageable process cartridge
CANON KK10 citations83
US9708116B2Jul 18, 2017
Packing member and cartridge packed in the packing member
CANON KK12 citations83
US9304488B2Apr 5, 2016
Cartridge package and packageable process cartridge
CANON KK12 citations83
US11860556B2Jan 2, 2024
Image forming apparatus having detection of residual toner amount
CANON KK2 citations73
US11789378B2Oct 17, 2023
Image forming apparatus and developing cartridge
CANON KK3 citations73
US12474652B2Nov 18, 2025
Image forming apparatus having detection of stored toner amount
CANON KK0 citations62
US12443126B2Oct 14, 2025
Image forming apparatus and developing cartridge
CANON KK0 citations62
US12228866B2Feb 18, 2025
Image forming apparatus and developing cartridge
CANON KK0 citations62
US12169375B2Dec 17, 2024
Image forming apparatus and image forming system
CANON KK0 citations52
US11493879B2Nov 8, 2022
Cartridge, image forming apparatus, and method for manufacturing cartridge
CANON KK0 citations51
US12168563B2Dec 17, 2024
Packing member and cartridge assembly
CANON KK0 citations47
US10295958B2May 21, 2019
Packing member
CANON KK0 citations30