Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7027771 | Mobile communication apparatus | Jun Sato | 2006-04-11 |
| 5715075 | Optical processing device operating in a wavelength-synchronized mode and an optical circuit exchanger that uses such an optical processing device | Kazuhiro Tanaka, Kiyohide Wakao, Hiroyuki Nobuhara, Hiroyuki Rokugawa, Satoshi Kuroyanagi | 1998-02-03 |
| 5657144 | Optical processing device operating in a wavelength-synchronized mode and an optical circuit exchanger that uses such an optical processing device | Kazuhiro Tanaka, Kiyohide Wakao, Hiroyuki Nobuhara, Hiroyuki Rokugawa, Satoshi Kuroyanagi | 1997-08-12 |
| 5629983 | Parallel transmission through plurality of optical fibers | — | 1997-05-13 |
| 5426644 | Parallel code transmission method and apparatus of the same | — | 1995-06-20 |
| 5386109 | Pre-amplifier for optical receiving and optical receiver using the same | Tadashi Ikeuchi, Kazuyuki Mori | 1995-01-31 |
| 5337323 | Integrated semiconductor laser array apparatus | Hiroyuki Rokugawa | 1994-08-09 |
| 5274487 | Photonic switching system | Hiroyuki Rokugawa | 1993-12-28 |
| 5165077 | Optical drop-and-insert apparatus | Hiroyuki Rokugawa, Shigefumi Masuda | 1992-11-17 |
| 5056120 | Phase adjusting circuit | Atsuki Taniguchi, Tomohiro Ishihara, Takaaki Wakisaka | 1991-10-08 |