HO

Hiroko Ohkura

Ricoh Company: 2 patents #462 of 1,683Top 30%
Overall (2011): #96,498 of 364,097Top 30%
2
Patents 2011

Issued Patents 2011

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8075974 Optical recording medium Hiroshi Deguchi, Eiko Hibino, Kazunori Ito, Hajime Yuzurihara, Hiroyuki Iwasa 2011-12-13
8017209 Optical recording medium Eiko Hibino, Hiroshi Deguchi, Kazunori Ito 2011-09-13