MH

Masao Hoshikawa

Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
Overall (All Time): #2,328,453 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4804393 Methods for producing optical fiber preform and optical fiber Koji Yano, Minoru Watanabe, Michihisa Kyoto 1989-02-14
4693738 Method for producing glass preform for optical fiber Michihisa Kyoto, Koji Yano, Gotaro Tanaka 1987-09-15