Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421477 | Optical switch | Toshiyuki Kasajima, Keiichi Hara | 2002-07-16 |
| 6404031 | Transparent semiconductor light-receiving element and manufacturing method thereof | Minoru Sasaki | 2002-06-11 |