HN

Hiro-o Nakagawa

Dai Nippon Printing Co.: 5 patents #462 of 2,222Top 25%
📍 Oshima, JP: #237 of 1,090 inventorsTop 25%
Overall (All Time): #1,036,981 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6933082 Photomask with dust-proofing device and exposure method using the same Toshiaki Motonaga 2005-08-23
6869736 Halftone phase shift photomask and blank for halftone phase shift photomask Toshiaki Motonaga, Yoshinori Kinase, Satoshi Yusa, Shigeki Sumida, Toshifumi Yokoyama +3 more 2005-03-22
6740455 Photomask Kenji Noguchi, Toshiaki Motonaga, Yasutaka Morikawa, Toshifumi Yokoyama, Takashi Tominaga +3 more 2004-05-25
6599667 Halftone phase shift photomask and blank for halftone phase shift photomask Satoshi Yusa, Toshifumi Yokoyama, Shigeki Sumida, Toshiaki Motonaga, Yoshinori Kinase +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