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Takeshi Yamakawa

Ricoh Company: 2 patents #462 of 1,683Top 30%
Overall (2011): #63,283 of 364,097Top 20%
2
Patents 2011

Issued Patents 2011

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7872664 Optical scanning device including shutter member that closes or opens an emission window and image forming apparatus including the optical scanning device Hiroshi Yoshizawa, Katsunori Shoji, Masanori Namba 2011-01-18
7869101 Image processing apparatus having enhanced controlling process for optical scanning unit Katsunori Shoji, Hiroshi Yoshizawa 2011-01-11