Issued Patents All Time
Showing 101–113 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5991477 | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1999-11-23 |
| 5909297 | Drift compensating circuit for optical modulators in an optical system | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1999-06-01 |
| 5900959 | Optical transmitter, optical communication system and optical communication method | Mitsuharu Noda, Setsuo Misaizu, Yasunori Nagakubo | 1999-05-04 |
| 5896217 | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1999-04-20 |
| 5870213 | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1999-02-09 |
| 5815294 | Optical transmission system with transmission characteristic measuring device | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1998-09-29 |
| 5760937 | Optical demultiplexer | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1998-06-02 |
| 5754322 | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | George Ishikawa, Hiroshi Nishimoto, Hiroki Ooi, Hiroaki Tomofuji | 1998-05-19 |
| 5696614 | Optical wavelength multiplex transmission method and optical dispersion compensation method | George Ishikawa, Hideyuki Miyata, Hiroshi Onaka, Kazue Otsuka | 1997-12-09 |
| 5636046 | Optical dispersion compensation method using transmissible band determined from synergetic effect of self phase modulation and group velocity dispersion | George Ishikawa, Hideyuki Miyata, Hiroshi Onaka, Kazue Otsuka | 1997-06-03 |
| 5612807 | Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system | George Ishikawa, Hideyuki Miyata, Hiroshi Onaka, Kazue Otsuka | 1997-03-18 |
| 5602666 | Optical dispersion compensation method for shifting a zero dispersion wavelength of an optical fiber to compensate for dispersion in an optical system | George Ishikawa, Hideyuki Miyata, Hiroshi Onaka, Kazue Otsuka | 1997-02-11 |
| 5596448 | Dispersion compensator and optical amplifier | Hiroshi Onaka | 1997-01-21 |