Inventor
KAWASHIMA NAOHIRO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “KAWASHIMA NAOHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH CO LTD
7 patentsUS11366410B2Jun 21, 2022
Developer container, developing device, process cartridge, and image forming apparatus
RICOH CO LTD2 citations71
US11726418B2Aug 15, 2023
Developer container, developing device, process cartridge, and image forming apparatus
RICOH CO LTD0 citations61
US11454897B2Sep 27, 2022
Developing device and image forming apparatus containing regulated bearing
RICOH CO LTD0 citations61
US11112731B2Sep 7, 2021
Developer container, developing device, and image forming apparatus
RICOH CO LTD0 citations61
US11256194B2Feb 22, 2022
Developing device, process cartridge, and image forming apparatus
RICOH CO LTD0 citations60
US11275325B2Mar 15, 2022
Image forming apparatus including a process cartridge that includes a developing device
RICOH CO LTD0 citations50
US10317814B2Jun 11, 2019
Powder supply device and image forming apparatus incorporating same
RICOH CO LTD0 citations41
KAWASHIMA NAOHIRO
2 patentsUS9817335B2Nov 14, 2017
Powder amount detector, powder supply device, and image forming apparatus incorporating same
KAWASHIMA NAOHIRO6 citations70
US12216418B2Feb 4, 2025
Powder conveyance device and image forming apparatus including a conveyor and first and second conveyance tubes
KAWASHIMA NAOHIRO0 citations58
KOSHIZUKA SHINNOSUKE
2 patentsUS10007209B2Jun 26, 2018
Developing device and image forming apparatus incorporating same that reduce low-flow regions of toner within the developing device
KOSHIZUKA SHINNOSUKE0 citations37
US9897938B2Feb 20, 2018
Developing device and image forming apparatus incorporating same
KOSHIZUKA SHINNOSUKE0 citations37