Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883834 | Primer compositions | Shosaku Yamamoto, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta | 1989-11-28 |
| 4874818 | Primer compositions | Shosaku Yamamoto, Hiroshi Ishioka, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta | 1989-10-17 |
| 4830778 | Primer compositions | Shosaku Yamamoto | 1989-05-16 |