Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883834 | Primer compositions | Shosaku Yamamoto, Kazuo Kakinuma, Junji Mayumi, Riichiro Maruta | 1989-11-28 |
| 4874818 | Primer compositions | Shosaku Yamamoto, Kazuo Kakinuma, Hiroshi Ishioka, Junji Mayumi, Riichiro Maruta | 1989-10-17 |