KK

Katsumi Kumada

Ricoh Company: 4 patents #201 of 1,683Top 15%
Overall (2011): #25,781 of 364,097Top 8%
4
Patents 2011

Issued Patents 2011

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8073375 Fixing unit and image forming apparatus having the same Chikara Hiraoka, Kazuhiro Wakamatsu 2011-12-06
7983596 Housing structure and image forming apparatus Genta Hagiwara, Nobuhiko Kita, Sei Onuma, Haruo Hashimoto, Masafumi Takahira +1 more 2011-07-19
7970311 Developing device and image forming apparatus using the same Kenji Nakamura, Yuichiro Suzuki, Shoji Takeya, Chikara Hiraoka 2011-06-28
7925193 Rotary member, developing device, and image forming apparatus Kouichi Oomori, Katsumasa Mikami, Yuichiro Suzuki, Minoru Toyoda, Yoshitaka Omori 2011-04-12