YG

Yasuhiro Gotoh

Sumitomo Electric Industries: 2 patents #217 of 2,038Top 15%
Overall (1997): #19,597 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5694387 Optical medium having a data pattern for detecting an upside-down insertion, and reproducing apparatus for use therewith Yoshihisa Fukushima, Michiyoshi Nagashima 1997-12-02
5616390 Optical recording medium permitting detection of identification signals in land areas and groove areas, optical information recording/reproducing apparatus and apparatus for producing an original disk for forming a disk substrate Naoyasu Miyagawa 1997-04-01