Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665472 | Optical filter having cascaded long-period gratings | Michiko Takushima, Hiroshi Suganuma | 2003-12-16 |
| 6580854 | Optical waveguide grating and method of making the same | Tadashi Enomoto, Shinji Ishikawa, Michiko Harumoto | 2003-06-17 |
| 6563984 | Long-period grating device | Michiko Harumoto, Shinji Ishikawa, Tadashi Enomoto | 2003-05-13 |
| 6522810 | Optical loss filter | Michiko Takushima, Shinji Ishikawa | 2003-02-18 |
| 6504962 | Method for determining an aging condition for an optical waveguide grating and temperature sensor | Shinji Ishikawa, Toru Iwashima, Michiko Harumoto, Akira Inoue | 2003-01-07 |