Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6480642 | Hybrid optical waveguide circuit chip, and method for predicting the characteristics thereof | Hiroshi Kawashima, Hiroyuki Koshi, Isao Ohyama | 2002-11-12 |
| 6418249 | Optical multiplexer/demultiplexer | Takeshi Nakajima, Kanji Tanaka | 2002-07-09 |
| 6404946 | Arrayed waveguide grating type optical multiplexer/demultiplexer | Takeshi Nakajima, Kanji Tanaka, Toshihiko Ohta | 2002-06-11 |