Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4504651 | Sulfur-containing polyester and process for its production | Koichi Kashima, Minoru Ozutsumi, Masaru Morinaga | 1985-03-12 |
| 4376854 | Process for preparing resorcinol copolymers | Koichi Kashima, Nobuo Kaifu | 1983-03-15 |