HR

Hiroshi Ryonai

Sumitomo Electric Industries: 1 patents #1,140 of 3,352Top 35%
Overall (2002): #205,128 of 266,432Top 80%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6347016 Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrier Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Keizou Miyata 2002-02-12