Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674646 | Mask producing method | Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi | 1997-10-07 |
| 5624791 | Pattern forming method using mask | Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi | 1997-04-29 |