Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7010235 | Method and system for all-optical signal regeneration | — | 2006-03-07 |
| 6498675 | Wavelength converter | Kazuhito Tajima | 2002-12-24 |
| 6337762 | All-optical switch and wavelength converter | — | 2002-01-08 |
| 6323992 | Wavelength converter and wavelength conversion method | — | 2001-11-27 |
| 6285700 | Semiconductor laser | Hiroaki Chida | 2001-09-04 |
| 6282015 | Wavelength converter | Kazuhito Tajima | 2001-08-28 |
| 6208455 | Wavelength converter | Kazuhito Tajima, Shigeru Nakamura | 2001-03-27 |
| 5894491 | Semiconductor laser device operable with low noise even in high ambient temperature | Hiroyuki Sawano | 1999-04-13 |
| 5815628 | Ordered semiconductor having periodical disorder and devices made therefrom | — | 1998-09-29 |
| 5448584 | Semiconductor laser for use as light source in data processing device with cladding layers having a bandgap twice as large as the active layer | — | 1995-09-05 |
| 5309466 | Semiconductor laser | Hiroaki Fujii, Akiko Gomyo | 1994-05-03 |
| 5151913 | Semiconductor laser | — | 1992-09-29 |