Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826898 | Colored polypropylene resin | Takumi Hirosawa, Yuzo Hirayama, Mituhiro Isomichi, Junichi Kumabe | 1989-05-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826898 | Colored polypropylene resin | Takumi Hirosawa, Yuzo Hirayama, Mituhiro Isomichi, Junichi Kumabe | 1989-05-02 |