HO

Hideaki Ohba

Ricoh Company: 1 patents #6,936 of 9,818Top 75%
Overall (All Time): #3,872,844 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5002812 Optical information recording medium, information recording method and optical information recording system using the medium Masaakira Umehara, Tsutomu Satoh, Keiko Ichinose 1991-03-26