Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7496294 | Optical multi-branch communication system | Michiya Takemoto, Toshikazu Yoshida, Hiroaki Mukai, Yoshihiro Asashiba, Seiji Kozaki +1 more | 2009-02-24 |
| 7340182 | Multiplexer | Aritomo Uemura, Seiji Kozaki, Kazuo Kubo | 2008-03-04 |
| 7139487 | Light burst transmission/reception control system, parent station device used in the same, child station device, and light burst transmission/reception control method | Seiji Kozaki | 2006-11-21 |
| 7043162 | Optical transmission system, fec multiplexer, fec multiplexer/separator, and error correction method | Kazuo Kubo, Hideo Yoshida | 2006-05-09 |
| 7020162 | Optical distribution network system with large usable bandwidth for DBA | Mitsuyoshi Iwasaki, Toshikazu Yoshida, Yoshihiro Asashiba | 2006-03-28 |
| 6959011 | Data transmission and reception system, data transmitter and data receiver | Koichi Takizawa, Kazuo Kubo | 2005-10-25 |
| 6870859 | Multiplexing system and multiplexing method of tributary signals | Seiji Kozaki, Kazuo Kubo, Eiichi Shibano, Tadami Yasuda | 2005-03-22 |
| 6868514 | FEC frame structuring method and FEC multiplexer | Kazuo Kubo, Hideo Yoshida, Hidenori Taga, Eiichi Shibano, Tadami Yasuda | 2005-03-15 |
| 6801720 | Optical signal quality supervisory device | Takashi Mizuochi, Yojiro Osaki, Aritomo Uemura, Kiwami Matsushita, Tadayoshi Kitayama +4 more | 2004-10-05 |
| 6434288 | Optical switching system | Aritomo Uemura, Takashi Mizuochi, Tadayoshi Kitayama, Shu Yamamoto, Tetsuya Miyazaki +2 more | 2002-08-13 |
| 5400163 | Multiplex digital communication system for transmitting channel identification information | Takashi Mizuochi, Susumu Sato, Tadayoshi Kitayama | 1995-03-21 |
| 5287389 | Frame alignment circuit | Kiwami Matsushita | 1994-02-15 |