Inventor
OOKA KAZUAKI
JP42 patents
Patents
42 patentsUS11693331B2Jul 4, 2023
Developer cartridge
BROTHER IND LTD4 citations86
US11249418B2Feb 15, 2022
Developer cartridge
BROTHER IND LTD4 citations84
US10859942B2Dec 8, 2020
Developer cartridge
BROTHER IND LTD4 citations84
US10520853B2Dec 31, 2019
Developer cartridge
BROTHER IND LTD6 citations84
US10488813B2Nov 26, 2019
Drum unit
BROTHER IND LTD6 citations84
US11435690B2Sep 6, 2022
Cartridge including holder for holding electrical contact surface and method of recycling cartridge
BROTHER IND LTD4 citations83
USD989856SJun 20, 2023
Toner cartridge
BROTHER IND LTD4 citations75
US11320779B2May 3, 2022
Drum unit
BROTHER IND LTD2 citations73
US10942485B2Mar 9, 2021
Drum unit
BROTHER IND LTD2 citations73
US10725427B2Jul 28, 2020
Drum unit
BROTHER IND LTD2 citations73
US12032326B2Jul 9, 2024
Cartridge including holder for holding electrical contact surface and method of recycling cartridge
BROTHER IND LTD1 citations72
US11693353B2Jul 4, 2023
Cartridge including holder for holding electrical contact surface and method of recycling cartridge
BROTHER IND LTD2 citations72
US11561502B2Jan 24, 2023
Image forming apparatus including support frame with ground plate and contact spring
BROTHER IND LTD2 citations72
US10739698B2Aug 11, 2020
Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing
BROTHER IND LTD2 citations72
US12572090B2Mar 10, 2026
Developer cartridge
BROTHER IND LTD0 citations63
US12547095B2Feb 10, 2026
Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge
BROTHER IND LTD0 citations63
US12197168B2Jan 14, 2025
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations63
US12174557B2Dec 24, 2024
Developer cartridge
BROTHER IND LTD0 citations63
US12032307B2Jul 9, 2024
Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge
BROTHER IND LTD0 citations63
US12032329B2Jul 9, 2024
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations63
US11921457B2Mar 5, 2024
Drum unit
BROTHER IND LTD0 citations63
US11714378B2Aug 1, 2023
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations63
US11573503B2Feb 7, 2023
Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge
BROTHER IND LTD0 citations63
US11256208B2Feb 22, 2022
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations63
US11204579B2Dec 21, 2021
Drawer including photosensitive drum and frame, and image forming apparatus provided with the same
BROTHER IND LTD0 citations63
US10962923B2Mar 30, 2021
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations63
US10890857B2Jan 12, 2021
Developing cartridge having electrode contactable with another electrode by pivot motion of the cartridge
BROTHER IND LTD0 citations63
US12498650B2Dec 16, 2025
Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing
BROTHER IND LTD0 citations62
US12332598B2Jun 17, 2025
Cartridge including holder for holding electrical contact surface and method of recycling cartridge
BROTHER IND LTD0 citations62
US12147171B2Nov 19, 2024
Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing
BROTHER IND LTD0 citations62
US11537062B2Dec 27, 2022
Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing
BROTHER IND LTD0 citations62
US11143981B2Oct 12, 2021
Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing
BROTHER IND LTD0 citations62
US10901340B2Jan 26, 2021
Developing cartridge including casing and first and second agitators for agitating toner accommodated in casing
BROTHER IND LTD0 citations62
US11415912B2Aug 16, 2022
Developing cartridge including agitator configured to contact peripheral surface of supply roller
BROTHER IND LTD0 citations61
US10684584B1Jun 16, 2020
Development device
BROTHER IND LTD1 citations60
US11454923B2Sep 27, 2022
Developing cartridge including cam movable relative to casing between first position and second position
BROTHER IND LTD0 citations52
US11385563B2Jul 12, 2022
Developing cartridge having first inclined surface movable together with first shaft, and second inclined surface movable together with second shaft
BROTHER IND LTD0 citations52
US11061357B2Jul 13, 2021
Image forming apparatus with rotation-controllable photosensitive drum and movable developing roller
BROTHER IND LTD0 citations52
US10754289B2Aug 25, 2020
Drawer including photosensitive drum and frame, and image forming apparatus provided with the same
BROTHER IND LTD0 citations52
US10649397B2May 12, 2020
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations52
US10459399B2Oct 29, 2019
Developing cartridge including shaft and cam having cam surface
BROTHER IND LTD0 citations52
US10890858B2Jan 12, 2021
Development device
BROTHER IND LTD0 citations51