Issued Patents All Time
Showing 26–50 of 89 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8204168 | Bit synchronization circuit with phase tracking function | Yusuke Yajima, Tohru Kazawa | 2012-06-19 |
| 8189571 | System apparatus and method for interconnecting TDM and frame/packet communication networks | Masahiko Mizutani, Masayuki Takase, Atsushi Iwamura, Akihiko Tanaka, Hideki Endo +1 more | 2012-05-29 |
| 8169895 | Network system and node | Masayuki Takase, Kenichi Sakamoto, Masahiko Mizutani, Hideki Endo, Takayuki Kanno +1 more | 2012-05-01 |
| 8098678 | PON system | Hideki Endo, Masahiko Mizutani, Masayuki Takase, Kenichi Sakamoto, Takayuki Kanno +1 more | 2012-01-17 |
| 8089865 | Multicast path management and protection | Masahiko Mizutani, Atsushi Iwamura, Masayuki Takase, Hideki Endo | 2012-01-03 |
| 7962037 | PON system and optical network unit | Masahiko Mizutani, Takeshi Shibata, Tohru Kazawa, Masanobu Kobayashi, Masayuki Takase | 2011-06-14 |
| 7908390 | Packet forwarding apparatus using token bucket algorithm and leaky bucket algorithm | Masayuki Takase, Masahiko Mizutani, Tohru Kazawa, Kenichi Sakamoto, Taishi Shinagawa | 2011-03-15 |
| 7876778 | Packet transfer apparatus | Masayuki Takase, Hideki Endo, Takayuki Kanno, Akihiko Tanaka, Nobuyuki Yamamoto | 2011-01-25 |
| 7773880 | Optical access system | Kenichi Sakamoto, Tohru Kazawa, Ryosuke Nishino, Masayuki Takase, Masahiko Mizutani | 2010-08-10 |
| 7675936 | Passive optical network (PON) system | Masahiko Mizutani, Takeshi Shibata, Tohru Kazawa, Masanobu Kobayashi, Hideki Endo | 2010-03-09 |
| 7676127 | Optical communication system using WDMA and CDMA | Masahiko Mizutani, Toshiki Sugawara, Tohru Kazawa | 2010-03-09 |
| 7630637 | PON system and optical network unit | Masahiko Mizutani, Takeshi Shibata, Tohru Kazawa, Masanobu Kobayashi, Masayuki Takase | 2009-12-08 |
| 7620074 | Communication system, master communication device, and slave communication device | Takeshi Yasuda, Ken Mutou | 2009-11-17 |
| 7620325 | Transmission apparatus with function of multi-step bandwidth assignment to other communication apparatuses | Masahiko Mizutani, Masayuki Takase, Kenichi Sakamoto, Atsushi Iwamura, Tohru Kazawa +1 more | 2009-11-17 |
| 7616567 | Shaping apparatus, communication node and flow control method for controlling bandwidth of variable length frames | Taishi Shinagawa, Masanobu Kobayashi, Toru Kazawa | 2009-11-10 |
| 7602800 | PON system | Hideki Endo, Masahiko Mizutani, Masayuki Takase, Kenichi Sakamoto, Takayuki Kanno +1 more | 2009-10-13 |
| 7483506 | Bit synchronization circuit with phase tracking function | Yusuke Yajima, Tohru Kazawa | 2009-01-27 |
| 7369768 | Optical access system | Kenichi Sakamoto, Tohru Kazawa, Ryosuke Nishino, Masayuki Takase, Masahiko Mizutani | 2008-05-06 |
| 7292785 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 2007-11-06 |
| 7167652 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 2007-01-23 |
| 7164682 | ATM communication apparatus and bandwidth control method of the same | Atsushi Iwamura, Noriko Saitoh, Hiroshi Hashimoto | 2007-01-16 |
| 7035264 | Communication network system and method for synchronously controlling path connection | Takashi Seki, Takaaki Toyama, Yasuo Murakami, Kenichirou Tomizawa, Masao Nakayama +3 more | 2006-04-25 |
| 6987733 | ATM communication apparatus and ATM cell forwarding control method | Hiroyuki Mukouyama, Atsushi Iwamura, Masanobu Kobayashi, Yasuhiko Numagami | 2006-01-17 |
| 6876624 | Multiplex conversion unit | Hiroyuki Fujita, Naohisa Hamaguchi | 2005-04-05 |
| 6728489 | Optical transmission system constructing method and system | Keiji Tomooka, Naohiro Sakakida, Shin Nishimura, Hironari Matsuda, Satoshi Aoki +6 more | 2004-04-27 |