SI

Sachiko Ishikita

Dai Nippon Printing Co.: 1 patents #48 of 147Top 35%
Overall (1997): #81,341 of 185,788Top 45%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5604060 Halftone phase shift photomask comprising a single layer of halftone light blocking and phase shifting Hiroyuki Miyashita, Koichi Mikami 1997-02-18