Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840817 | Method for treatment of fibrous materials | Yasunao Shimano | 1989-06-20 |
| 4825536 | Method for fabricating electronic circuit board | Eiji Itemadani, Kazuhiro Mori | 1989-05-02 |