Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5786115 | Mask producing method | Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita | 1998-07-28 |
| 5674646 | Mask producing method | Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita | 1997-10-07 |
| 5624791 | Pattern forming method using mask | Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita | 1997-04-29 |
| 5489509 | Mask, mask producing method and pattern forming method using mask | Kenji Nakagawa, Seiichiro Yamaguchi, Masao Taguchi, Kazuhiko Sumi, Yuichiro Yanagishita | 1996-02-06 |