Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6080833 | Low-birefringent organic optical component and a spirobiindan polymer | Atsuo Otsuji, Keisuke Takuma, Rihoko Suzuki, Tatsuhiro Urakami, Wataru Yamashita +8 more | 2000-06-27 |
| 5677398 | Epoxy acrylate resins and their uses | Akio Karasawa, Keisuke Takuma, Akihiro Yamaguchi | 1997-10-14 |
| 5391806 | Heat-sensitive recording materials and phenol compounds | Atsuo Otsuji, Yoshimitsu Tanabe, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Masakatsu Nakatsuka +1 more | 1995-02-21 |
| 5270281 | Heat-sensitive recording materials and phenol compounds | Atsuo Otsuji, Yoshimitsu Tanabe, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Masakatsu Nakatsuka +1 more | 1993-12-14 |