Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861396 | Aluminum alloy material plate for printing | Mamoru Matsuo, Yutaka Okuda, Hirokazu Sakaki | 1989-08-29 |
| 4822715 | Aluminum alloy supporter for lithographic printing plate | Ryo Shoji, Chozo Fujikura, Hirokazu Sakaki | 1989-04-18 |