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USPTO Patent Rankings Data through Sept 30, 2025
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Yuichi Kikuchi — 5 Patents in 2021

Canon: 5 patents #154 of 3,943Top 4%
Overall (2021): #25,520 of 548,734Top 5%
5 Patents 2021

Issued Patents 2021

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
11175602 Electroconductive member, process cartridge, and electrophotographic image forming apparatus Satoru Nishioka, Masahiro Kurachi, Kenji Takashima, Kazuhiro Yamauchi, Kana Sato +5 more 2021-11-16
11169454 Electrophotographic electro-conductive member, process cartridge, and electrophotographic image forming apparatus Satoru Nishioka, Kazuhiro Yamauchi, Hiroaki Watanabe, Takumi Furukawa, Yasuhiro Fushimoto +3 more 2021-11-09
11137716 Process cartridge and electrophotographic apparatus Fumiyuki Hiyama, Kaname Watariguchi, Kohei Makisumi, Kazuhiro Yamauchi 2021-10-05
11112719 Process cartridge and electrophotographic apparatus capable of suppressing lateral running while maintaining satisfactory potential function Kohei Makisumi, Kaname Watariguchi, Fumiyuki Hiyama, Kazuhiro Yamauchi 2021-09-07
11112748 Developing member, process cartridge and electrophotographic apparatus Masaki Yamada, Tetsuo Hino, Kazuhiro Yamauchi, Takumi Furukawa, Hiroaki Watanabe +3 more 2021-09-07