Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6764792 | Halftone phase shift photomask and blanks for halftone phase shift photomask for producing it | Junji Fujikawa, Takafumi Okamura, Hiroshi Mohri, Toshifumi Yokoyama, Haruo Kokubo | 2004-07-20 |
| 6740455 | Photomask | Kenji Noguchi, Toshiaki Motonaga, Hiro-o Nakagawa, Yasutaka Morikawa, Toshifumi Yokoyama +3 more | 2004-05-25 |