Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6892003 | Variable dispersion compensator and optical transmission system | Makoto Katayama, Toshiaki Okuno, Masayuki Nishimura, Tomomi Sano, Masakazu Shigehara +2 more | 2005-05-10 |
| 6876791 | Diffraction grating device | Kiyotaka Murashima, Ken Hashimoto | 2005-04-05 |
| 6504962 | Method for determining an aging condition for an optical waveguide grating and temperature sensor | Shinji Ishikawa, Michiko Harumoto, Akira Inoue, Masakazu Shigehara | 2003-01-07 |
| 6483955 | Diffraction grating device | Manabu Shiozaki, Masakazu Shigehara, Kiyotaka Murashima | 2002-11-19 |
| 6477308 | Optical waveguide devices and methods of fabricating the same | Tetsuya Hattori, Shigeru Semura | 2002-11-05 |
| 6292607 | Method for determining an aging condition for an optical waveguide grating and temperature sensor | Shinji Ishikawa, Michiko Takushima (nee Harumoto), Akira Inoue, Masakazu Shigehara | 2001-09-18 |
| 6137931 | Method for determining a condition of aging for optical fiber grating | Shinji Ishikawa, Michiko Harumoto, Akira Inoue | 2000-10-24 |
| 6072927 | Optical filter | Michiko Harumoto | 2000-06-06 |
| 6067392 | Optical fiber diffraction grating, a method of fabricating thereof and a laser light source | Toshinori Wakami, Masayuki Shigematsu, Yoshiaki Terasawa, Akira Inoue, Masakazu Shigehara | 2000-05-23 |
| 6021242 | Diffraction grating type band-pass filter and method of making the same | Michiko Harumoto | 2000-02-01 |
| 5859944 | Optical connector | Akira Inoue, Masumi Ito, Yoshiaki Miyajima, Shin-ichi Furukawa | 1999-01-12 |