Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7061664 | Wavelength converter and wavelength division multiplexing transmission method using the same | Osamu Aso, Shu Namiki, Kouki Sato | 2006-06-13 |
| 6665113 | Wavelength converter and wavelength division multiplexing transmission method using same | Osamu Aso, Shu Namiki, Kouki Sato | 2003-12-16 |
| 6198570 | Optical filter, manufacturing method thereof, and optical amplifier equipped with said optical filter | Masaru Fukushima, Haruki Ogoshi | 2001-03-06 |
| 5933552 | Optical filter, manufacturing method thereof and optical amplifier equipped with said optical filter | Masaru Fukushima, Haruki Ogoshi | 1999-08-03 |
| 5808768 | Optical telecommunications system | Masateru Tadakuma, Masahito Morimoto, Haruki Ogoshi | 1998-09-15 |
| 5576871 | Method for optical communications | Akira Fujisaki, Haruki Ohgoshi | 1996-11-19 |
| 5329348 | Method of identifying a particular optical cable out of a number of similar optical cables | Akira Fujisaki, Kazunori Nakamura, Haruki Ohgoshi | 1994-07-12 |