Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693957 | Photovoltaic element and method of manufacturing the same | Keiichi Sano | 1997-12-02 |
| 5616932 | Amorphous silicon germanium film and semiconductor device using the same | Keiichi Sano | 1997-04-01 |