Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7292785 | Optical transmission system constructing method and system | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2007-11-06 |
| 7167652 | Optical transmission system constructing method and system | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2007-01-23 |
| 6728489 | Optical transmission system constructing method and system | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2004-04-27 |
| 6266169 | Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2001-07-24 |
| 6018405 | Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 2000-01-25 |
| 6005699 | Optical wavelength multiplexing system | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1999-12-21 |
| 5875046 | Optical repeater and optical transmitter | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1999-02-23 |
| 5861972 | Optical multiplex transmission equipment and method | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1999-01-19 |
| 5812289 | Optical repeater and optical transmitter | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1998-09-22 |
| 5739932 | Optical transmission system constructing method and system | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1998-04-14 |
| 5671074 | Optical multiplex transmission equipment and method | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1997-09-23 |
| 5586115 | Add-drop multiplexer | Yukio Nakano | 1996-12-17 |
| 5555477 | Optical transmission system constructing method and system | Naohiro Sakakida, Shin Nishimura, Yoshihiro Ashi, Hironari Matsuda, Satoshi Aoki +6 more | 1996-09-10 |
| 4658217 | Timing signal extracting circuit | Hiroshi Takatori, Toshiro Suzuki | 1987-04-14 |
| 4435825 | Clock signal extracting circuit | — | 1984-03-06 |
| 4425512 | Power supply system | Makoto Ogawa, Hideo Ishiguro | 1984-01-10 |