Issued Patents All Time
Showing 51–75 of 89 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6266169 | Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 2001-07-24 |
| 6205562 | Path switching method, path switching apparatus and nodes of UPSR | Takao Fukushima, Atsushi Kubotera | 2001-03-20 |
| 6067654 | ATM switch and control method thereof | Yukio Nakano, Takahiko Kozaki, Shinobu Gohara | 2000-05-23 |
| 6038678 | Path switching method, path switching apparatus and nodes of UPSR | Takao Fukushima, Atsushi Kubotera | 2000-03-14 |
| 6018405 | Optical transmission equipment which transmits an amplified optical data signal and an optical surveillance signal | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 2000-01-25 |
| 6005699 | Optical wavelength multiplexing system | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1999-12-21 |
| 5983386 | ATM switch and control method thereof | Yukio Nakano, Takahiko Kozaki, Shinobu Gohara | 1999-11-09 |
| 5896387 | Configuration method of multiplex conversion unit and multiplex conversion unit | Hiroyuki Fujita, Naohisa Hamaguchi | 1999-04-20 |
| 5875046 | Optical repeater and optical transmitter | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1999-02-23 |
| 5861972 | Optical multiplex transmission equipment and method | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1999-01-19 |
| 5818853 | ATM switch and control method thereof | Yukio Nakano, Takahiko Kozaki, Shinobu Gohara | 1998-10-06 |
| 5815489 | Self-healing ring switch and method of controlling the same | Masahiro Takatori, Hiroyuki Fujita | 1998-09-29 |
| 5812289 | Optical repeater and optical transmitter | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1998-09-22 |
| 5768274 | Cell multiplexer having cell delineation function | Masaru Murakami, Yozo Oguri, Katsuyoshi Tanaka, Takahiko Kozaki, Akihiko Takase +1 more | 1998-06-16 |
| 5757806 | Data multiplexing system having at least one low-speed interface circuit connected to a bus | Hiroki Koyama, Hiroyuki Fujita, Michael Wright | 1998-05-26 |
| 5739932 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1998-04-14 |
| 5721727 | Control method and apparatus for path switching in ring network | Masahiro Takatori | 1998-02-24 |
| 5671074 | Optical multiplex transmission equipment and method | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1997-09-23 |
| 5634097 | Virtual path connector and virtual path tracing method and apparatus | Toshihiko Fujita, Hiromi Ueda, Haruhiko Matsunaga | 1997-05-27 |
| 5600631 | Self-healing ring switch and method of controlling the same | Masahiro Takatori, Hiroyuki Fujita | 1997-02-04 |
| 5577037 | Method of processing inclusively STM signals and ATM signals and switching system employing the same | Masahiro Takatori, Yukio Nakano | 1996-11-19 |
| 5570368 | Cell multiplexer having cell delineation function | Masaru Murakami, Yozo Oguri, Katsuyoshi Tanaka, Takahiko Kozaki, Akihiko Takase +1 more | 1996-10-29 |
| 5557621 | ATM switch and control method thereof | Yukio Nakano, Takahiko Kozaki, Shinobu Gohara | 1996-09-17 |
| 5555477 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 1996-09-10 |
| 5550805 | Failure restoration method in a mesh network | Masahiro Takatori, Yukio Nakano | 1996-08-27 |