Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5610435 | Semiconductor device having an electrode which controls a surface state of the base area for minimizing a change of the D.C. amplification ratio | Hidenori Watanabe, Junichi Hoshi, Akira Okita, Hideshi Kuwabara | 1997-03-11 |