Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888715 | Semiconductor test system | Tetsuo Tada | 1989-12-19 |
| 4841582 | Washer construction for a sanitary device | Yuji Yamaguchi, Hideki Furukawa | 1989-06-27 |
| 4842796 | Process for producing high strength polymetaphenylene isophthalamide fiber | Hiroshi Fujie | 1989-06-27 |