Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11652329 | Light source for Raman amplification, light source system for Raman amplification, Raman amplifier, and Raman amplifying system | Masahito Morimoto | 2023-05-16 |
| 10938175 | Light source for Raman amplification, light source system for Raman amplification, Raman amplifier, and Raman amplifying system | Masahito Morimoto | 2021-03-02 |
| 6411430 | Optical amplifier | Atsushi Ogino, Masaru Fukushima, Yoshihiro Emori, Yoshio Tashiro | 2002-06-25 |
| 6333803 | Optical transmitter | Katsuya Kurotori | 2001-12-25 |
| 6198570 | Optical filter, manufacturing method thereof, and optical amplifier equipped with said optical filter | Masaru Fukushima, Hijiri Nimura | 2001-03-06 |
| 6028698 | High-output and low-noise optical fiber amplifier | Hiroki TACHIBANA | 2000-02-22 |
| 5965874 | Method and apparatus for measuring the polarization characteristics of optical transmission medium | Osamu Aso, Isamu Ohshima | 1999-10-12 |
| 5933552 | Optical filter, manufacturing method thereof and optical amplifier equipped with said optical filter | Masaru Fukushima, Hijiri Nimura | 1999-08-03 |
| 5883736 | Er-doped optical fiber amplifier | Isamu Oshima, Akira Fujisaki | 1999-03-16 |
| 5808768 | Optical telecommunications system | Masateru Tadakuma, Masahito Morimoto, Hijiri Nimura | 1998-09-15 |
| 5379357 | Method and apparatus for polarized optical telecommunications using ultrasonic modulation means | Shintaro Sentsui, Akira Fujisaki, Morinobu Mizutani, Mitsuo Miyazaki | 1995-01-03 |
| 5202746 | Method and apparatus for identifying an optical transmission medium | Shintaro Sentsui, Akira Fujisaki, Morinobu Mizutani, Mitsuo Miyazaki | 1993-04-13 |