SY

Shizuo Yokoyama

Ricoh Company: 3 patents #4,826 of 9,818Top 50%
Overall (All Time): #1,645,483 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5694226 Facsimile apparatus 1997-12-02
4661822 Ink jet printer Tetsuro Hirota, Shigeyuki Araki, Haruyoshi Masui, Toshitaka Hirata 1987-04-28
4630814 Sheet feed apparatus for printer Toshio Kawakubo, Chuji Ishikawa 1986-12-23