Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4745611 | Buried twin ridge substrate laser | Ken Hamada, Kunio Itoh, Masahiro Kume, Hirokazu Shimizu | 1988-05-17 |
| 4675074 | Method of manufacturing semiconductor device | Masaru Wada, Hirokazu Shimizu, Kunio Itoh, Ken Hamada, Iwao Teramoto | 1987-06-23 |