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Yoshiki Yanagawa

Ricoh Company: 4 patents #201 of 1,683Top 15%
Overall (2011): #19,584 of 364,097Top 6%
4
Patents 2011

Issued Patents 2011

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8059992 Corona charger, and process cartridge and image forming apparatus using same Makoto Yasuda, Naohiro Toda, Takeshi Orito, Shinji Nohsho 2011-11-15
7937025 Scorotron corona charger, process cartridge, and image forming apparatus Shinji Nohsho 2011-05-03
7879519 Image bearing member and image forming apparatus using the same Naohiro Toda, Takaaki Ikegami, Makoto Yasuda, Takeshi Orito 2011-02-01
7871747 Electrophotographic photoconductor having charge blocking and moire preventing layers Keisuke Shimoyama, Eiji Kurimoto, Takeshi Orito, Tatsuya Niimi, Shinichi Kawamura +1 more 2011-01-18