Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649458 | Method for manufacturing semiconductor device with hetero junction bipolar transistor | Atsushi Kurokawa, Toshiaki Kitahara, Yoshinori Imamura | 2003-11-18 |
| 6638850 | Method of fabricating a semiconductor device having a trench-gate structure | Nobuo Machida, Kentaro Ooishi | 2003-10-28 |