Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864003 | Block-graft polymer and process for producing it | Teruo Fujimoto, Osamu Watanabe, Koichi Ito | 1989-09-05 |
| 4803243 | Block-graft copolymer | Teruo Fujimoto, Osamu Watanabe, Koichi Ito | 1989-02-07 |