Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8386991 | Support apparatus, method, and recording medium | Katsuya Ogata | 2013-02-26 |
| 7266308 | Light output control circuit | Tadao Inoue, Tadashi Ikeuchi, Masaaki Kawai, Norio Ueno, Norio Murakami +3 more | 2007-09-04 |
| 7119617 | Differential amplifier | Takuji Yamamoto | 2006-10-10 |
| 7068747 | Data decision circuit using clock signal which has phase optimized with respect to phase of input data signal | Tadashi Ikeuchi, Daisuke Yamazaki, Masaaki Kawai | 2006-06-27 |
| 6975813 | Light output control device | Tadao Inoue, Tadashi Ikeuchi, Masaaki Kawai, Norio Ueno, Norio Murakami +3 more | 2005-12-13 |
| 6256329 | Semiconductor laser driver circuit | Atsuo Ishizuka | 2001-07-03 |
| 6242870 | Light emitting device driving circuit | Hisako Koyanagi | 2001-06-05 |
| 6078150 | Light-emitting element driving circuit and device using the same | Hisako Koyanagi | 2000-06-20 |
| 5923455 | Data identifying device and light receiver using the same | — | 1999-07-13 |
| 5848084 | Semiconductor light source for an optical transmitter and an optical transmission module using the semiconductor light source | — | 1998-12-08 |
| 5796792 | Data identifying device and light receiver using the same | — | 1998-08-18 |
| 5740210 | Data discriminating circuit and a parallel data receiver using the same | — | 1998-04-14 |
| 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, Nobuhiro Fujimoto, 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, Nobuhiro Fujimoto, Satoshi Kuroyanagi | 1997-08-12 |
| 5473636 | Data discriminating circuit and an optical receiver using the same | — | 1995-12-05 |
| 5337323 | Integrated semiconductor laser array apparatus | Nobuhiro Fujimoto | 1994-08-09 |
| 5274487 | Photonic switching system | Nobuhiro Fujimoto | 1993-12-28 |
| 5165077 | Optical drop-and-insert apparatus | Shigefumi Masuda, Nobuhiro Fujimoto | 1992-11-17 |