Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415072 | Optical wavelength multiplexing and dividing device | Hiroyuki Koshi, Takeshi Nakajima, Kanji Tanaka | 2002-07-02 |
| 6393170 | Optical multiplexer/demultiplexer | Takeshi Nakajima, Kanji Tanaka | 2002-05-21 |