Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7150570 | Module | — | 2006-12-19 |
| 5664038 | Optical waveguide structure as well as optical wave branching unit, optical wave combining unit, optical selector and optical wave combining and branching unit | — | 1997-09-02 |
| 5259044 | Mach-Zehnder optical modulator with monitoring function of output light | Hideki Isono, Junko Watanabe, Tadao Shingyoji | 1993-11-02 |
| 5033052 | Optical semiconductor device and production method thereof | Takayuki Masuko, Kaoru Moriya | 1991-07-16 |