SS

Shigeki Sumida

Dai Nippon Printing Co.: 3 patents #744 of 2,222Top 35%
📍 Oshima, JP: #365 of 1,090 inventorsTop 35%
Overall (All Time): #1,597,973 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6869736 Halftone phase shift photomask and blank for halftone phase shift photomask Hiro-o Nakagawa, Toshiaki Motonaga, Yoshinori Kinase, Satoshi Yusa, Toshifumi Yokoyama +3 more 2005-03-22
6599667 Halftone phase shift photomask and blank for halftone phase shift photomask Satoshi Yusa, Toshifumi Yokoyama, Toshiaki Motonaga, Yoshinori Kinase, Hiro-o Nakagawa +3 more 2003-07-29
6458496 Blank for halftone phase shift photomask and halftone phase shift photomask Toshiaki Motonaga, Toshifumi Yokoyama, Takafumi Okamura, Yoshinori Kinase, Hiroshi Mohri +4 more 2002-10-01