Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6480642 | Hybrid optical waveguide circuit chip, and method for predicting the characteristics thereof | Hiroshi Kawashima, Isao Ohyama, Shiro Nakamura | 2002-11-12 |
| 6415072 | Optical wavelength multiplexing and dividing device | Naoki Hashizume, Takeshi Nakajima, Kanji Tanaka | 2002-07-02 |