Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828937 | Process for producing hollow extrudate for use in vacuum | Yutaka Kato, Eizo Isoyama | 1989-05-09 |
| 4806436 | Substrate for amorphous silicon solar cells | Kiyoshi Tada, Tatsuo Otsuka | 1989-02-21 |