Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5225235 | Semiconductor wafer and manufacturing method therefor | Tetsujiro Yoshiharu | 1993-07-06 |
| 4925809 | Semiconductor wafer and epitaxial growth on the semiconductor wafer with autodoping control and manufacturing method therefor | Tetsujiro Yoshiharu | 1990-05-15 |