Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831341 | Photocathode having AlGaN layer with specified Mg content concentration | Minoru Niigaki, Masashi Ohta, Yasufumi Takagi, Shoichi Uchiyama | 2004-12-14 |
| 6804275 | Heat sink and semiconductor laser apparatus and semiconductor laser stack apparatus using the same | Hirofumi Miyajima | 2004-10-12 |