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Junya Sumida

Brother Kogyo: 4 patents #44 of 394Top 15%
BI Brother Industries: 1 patents #12 of 27Top 45%
Overall (2025): #22,744 of 469,880Top 5%
5
Patents 2025

Issued Patents 2025

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D1095670 Photosensitive drum unit Masaaki Furukawa 2025-09-30
12339616 Image forming apparatus including detachable process cartridge having handle on developing unit Yasuo Fukamachi, Yuki Nagashima, Sakiho HAYAKAWA, Marika Ozaki 2025-06-24
12282290 Process cartridge including drum cartridge having first holder, developing cartridge having second holder, and plate for connecting first holder and second holder to each other Yasuo Fukamachi, Kazutoshi Nakamura, Hideshi Nishiyama, Shinya Kusuda 2025-04-22
12259675 Process cartridge including developing cartridge having developing holder, and drum cartridge having elastic member that can be connected to developing holder Yasuo Fukamachi, Shinya Kusuda, Kazutoshi Nakamura, Hideshi Nishiyama 2025-03-25
12210300 Developing cartridge including movable plate for moving holder holding electrical contact surface Naoya Kamimura, Tomitake Aratachi, Yasuo Fukamachi, Junichi Hashimoto, Saya Minoshima +4 more 2025-01-28