Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6243524 | Optical waveguide, method for fabricating same, and coupling structure of optical waveguide to light-receiving device | — | 2001-06-05 |
| 5978531 | Optical isolator and optical amplifier waveguide device | — | 1999-11-02 |
| 5883991 | Optical waveguide circulator | — | 1999-03-16 |
| 5717800 | Waveguide-type optical device coupling structure with circular rods | — | 1998-02-10 |
| 5617495 | Optical semiconductor device and connection structure therefor | Kazuhiko Kurata | 1997-04-01 |