Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5985519 | Method of manufacturing semiconductor device using top antireflection film | Yoko Kakamu | 1999-11-16 |
| 5786115 | Mask producing method | Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi | 1998-07-28 |
| 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 |
| 5489509 | Mask, mask producing method and pattern forming method using mask | Toshiaki Kawabata, Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi | 1996-02-06 |