Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869976 | Process for preparing semiconductor layer | Yoshihisa Tawada, Kazunori Tsuge | 1989-09-26 |
| 4820907 | Controlled furnace heat treatment | Kenichi Terauchi | 1989-04-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869976 | Process for preparing semiconductor layer | Yoshihisa Tawada, Kazunori Tsuge | 1989-09-26 |
| 4820907 | Controlled furnace heat treatment | Kenichi Terauchi | 1989-04-11 |