Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691112 | Sulfonium salt and chemically amplified positive resist composition | Satoshi Watanabe, Toshinobu Ishihara, Kazumasa Maruyama, Yoshihumi Takeda, Junji Shimada +2 more | 1997-11-25 |
| 5679496 | Chemically amplified positive resist composition | Satoshi Watanabe, Katsuyuki Oikawa, Akinobu Tanaka, Yoshio Kawai, Jiro Nakamura | 1997-10-21 |
| 5633409 | Tristertbutoxyphenyl sulfonium tosylate compound | Satoshi Watanabe, Toshinobu Ishihara, Kazumasa Maruyama, Yoshihumi Takeda, Junji Shimada +2 more | 1997-05-27 |