Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861396 | Aluminum alloy material plate for printing | Yutaka Okuda, Kazushige Takizawa, Hirokazu Sakaki | 1989-08-29 |
| 4838958 | Aluminum-alloy rolled sheet and production method therefor | Toshio Komatsubara, Toshiki Muramatsu | 1989-06-13 |
| 4836863 | Wrought material of aluminum alloy to be anodized gray and process for making the same | Masami Furuya | 1989-06-06 |
| 4808247 | Production process for aluminum-alloy rolled sheet | Toshio Komatsubara | 1989-02-28 |