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Yukihisa Yokoyama

Ricoh Company: 3 patents #392 of 2,036Top 20%
Overall (2016): #48,458 of 481,213Top 15%
3
Patents 2016

Issued Patents 2016

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9323171 Optical scanning device including a rotating polygon mirror and image forming apparatus incorporating same Yukio Itami, Naoki Miyatake 2016-04-26
9304315 Optical scanning unit and image forming apparatus Yukio Itami, Yoshinori Hayashi, Naoki Miyatake 2016-04-05
9279979 Optical scanning device and image forming apparatus 2016-03-08