Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |