YS

Yukio Sakano

Ricoh Company: 3 patents #12 of 489Top 3%
Overall (1989): #5,810 of 140,708Top 5%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4875190 Two-dimensional memory unit having a 2d array of individually addressable blocks each having a 2d array of cells — 1989-10-17
4851920 Digital copying apparatus — 1989-07-25
4805120 Two-color image recorder — 1989-02-14