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Yumiko Yagi

Ricoh Company: 3 patents #4,826 of 9,818Top 50%
Overall (All Time): #1,523,313 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
9146487 Carrier for developing electrostatic latent image, and electrostatic latent image developer Toyoshi Sawada, Shigenori Yaguchi, Hiroshi Tohmatsu, Hitoshi Iwatsuki, Toyoaki Tano +1 more 2015-09-29
7505728 Lubricant applying unit, process cartridge, image forming apparatus, and image forming method Daichi Yamaguchi, Kenji Sugiura, Takahiko Tokumasu, Takuya Seshita, Katsuhiko Tani 2009-03-17
7209699 Lubricant applying unit, process cartridge, image forming apparatus, and image forming method Daichi Yamaguchi, Kenji Sugiura, Takahiko Tokumasu, Takuya Seshita, Katsuhiko Tani 2007-04-24