Issued Patents All Time
Showing 76–81 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691112 | Sulfonium salt and chemically amplified positive resist composition | Satoshi Watanabe, Youichi Ohsawa, Toshinobu Ishihara, Kazumasa Maruyama, Yoshihumi Takeda +2 more | 1997-11-25 |
| 5633409 | Tristertbutoxyphenyl sulfonium tosylate compound | Satoshi Watanabe, Youichi Ohsawa, Toshinobu Ishihara, Kazumasa Maruyama, Yoshihumi Takeda +2 more | 1997-05-27 |
| 5612170 | Positive resist composition | Junji Tsuchiya, Toshinobu Ishihara, Akinobu Tanaka, Yoshio Kawai, Jiro Nakamura | 1997-03-18 |
| 5580936 | Method for preparing partially tert-butoxylated poly(p-hydroxystyrene) | Junji Tsuchiya, Osamu Watanabe, Yoshihumi Takeda, Toshinobu Ishihara | 1996-12-03 |
| 5569784 | Sulfonium salt and resist composition | Satoshi Watanabe, Junji Shimada, Youichi Ohsawa, Toshinobu Ishihara, Kazumasa Maruyama | 1996-10-29 |
| 5455360 | 1-pyrrolyl silicon compounds, chemically adsorbed ultrathin film formed therefrom and method of manufacturing the same | Norihisa Mino, Kazufumi Ogawa, Toshinobu Ishihara, Mikio Endo, Tohru Kubota | 1995-10-03 |