Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852791 | Method for making corrosion resistance heat exchangers | Ichiro Iwai, Noboru Yamaguchi | 1989-08-01 |
| 4806436 | Substrate for amorphous silicon solar cells | Kiyoshi Tada, Kenji Tsukamoto | 1989-02-21 |