Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374581 | Method for preparing semiconductor member | Takeshi Ichikawa, Takao Yonehara | 1994-12-20 |
| 5277748 | Semiconductor device substrate and process for preparing the same | Takao Yonehara | 1994-01-11 |