YY

Yoh-Ichi Yamaguchi

HO Hoya: 1 patents #757 of 1,290Top 60%
Overall (All Time): #3,873,449 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5005075 X-ray mask and method of manufacturing an X-ray mask Masato Kobayashi, Minoru Sugawara, Kazuhide Yamashiro 1991-04-02