Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946234 | Positive sensitive resin composition and a process for forming a resist pattern therewith | Genji Imai, Toshiro Takao, Keiichi Ikeda, Yoshihiro Yamamoto | 2005-09-20 |
| 6630285 | Positive sensitive resin composition and a process for forming a resist pattern therewith | Genji Imai, Toshiro Takao, Keiichi Ikeda, Yoshihiro Yamamoto | 2003-10-07 |
| 6433118 | Copolymer, a manufacturing process therefor and a solution containing thereof | Toshiro Takao, Keiichi Ikeda, Yoshihiro Yamamoto | 2002-08-13 |
| 6281318 | Poly{1-(1-alkoxyalkoxy)-4-(1-methylethenyl)benzene} having narrow molecular weight distribution, its preparation process, and preparation process of poly{4-methylethenyl)phenol} having narrow molecular weight distribution | Yoshihiro Yamamoto, Toshiro Takao, Isao Hara | 2001-08-28 |