Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6418249 | Optical multiplexer/demultiplexer | Shiro Nakamura, Takeshi Nakajima | 2002-07-09 |
| 6415072 | Optical wavelength multiplexing and dividing device | Naoki Hashizume, Hiroyuki Koshi, Takeshi Nakajima | 2002-07-02 |
| 6404946 | Arrayed waveguide grating type optical multiplexer/demultiplexer | Takeshi Nakajima, Toshihiko Ohta, Shiro Nakamura | 2002-06-11 |
| 6393170 | Optical multiplexer/demultiplexer | Takeshi Nakajima, Naoki Hashizume | 2002-05-21 |