Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6327404 | Wavelength filter | Shinsuke Tanaka, Yuichi Matsushima | 2001-12-04 |
| 6084997 | Coupled waveguide structure | Katsuyuki Utaka, Shinsuke Tanaka, Yuichi Matsushima | 2000-07-04 |
| 5859941 | Optical add/drop multiplexer device | Shinsuke Tanaka, Yuichi Matsushima | 1999-01-12 |
| 5187717 | Tunable semiconductor laser | Katsuyuki Utaka, Yuichi Matsushima | 1993-02-16 |
| 5145796 | Method for manufacturing a semiconductor apparatus | Alberto O. Adan | 1992-09-08 |