Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865823 | Method for recovering gallium | Yukinori Minagawa, Kunihiko Yamaguchi, Kazumasa Arai, Gouichi Muramatsu | 1989-09-12 |
| 4866767 | Subscriber line interface circuit | Hiroshi Tanimoto, Satoru Yoshida | 1989-09-12 |