Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6763038 | Light transmission equipment | Nobuhiko Usui, Koji Matsunaga, Masayuki Maehira, Tatsuya Toyozumi, Yumiko Ogata +1 more | 2004-07-13 |
| 6728925 | Error correcting method and apparatus | Junichi Ishiwatari, Masahiro Shioda, Takashi Kuwabara, Yukio Yamazaki | 2004-04-27 |
| 6674771 | Transmission method and apparatus for transmitting low-speed SDH signals using a high-speed SDH frame | — | 2004-01-06 |