Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6933082 | Photomask with dust-proofing device and exposure method using the same | Hiro-o Nakagawa | 2005-08-23 |
| 6869736 | Halftone phase shift photomask and blank for halftone phase shift photomask | Hiro-o Nakagawa, Yoshinori Kinase, Satoshi Yusa, Shigeki Sumida, Toshifumi Yokoyama +3 more | 2005-03-22 |