Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580854 | Optical waveguide grating and method of making the same | Tadashi Enomoto, Shinji Ishikawa, Masakazu Shigehara | 2003-06-17 |
| 6563984 | Long-period grating device | Masakazu Shigehara, Shinji Ishikawa, Tadashi Enomoto | 2003-05-13 |
| 6504962 | Method for determining an aging condition for an optical waveguide grating and temperature sensor | Shinji Ishikawa, Toru Iwashima, Akira Inoue, Masakazu Shigehara | 2003-01-07 |