Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8131152 | Optical add/drop multiplexer | Yuichi Akiyama, Takafumi Terahara, Hiroki Ooi, Jens Rasmussen, Akira Miura | 2012-03-06 |
| 7933522 | Optical signal transmission system and optical signal transmission method | Jens Rasmussen | 2011-04-26 |
| 7877025 | Phase monitor apparatus, phase control apparatus and methods thereof for optical DQPSK receiver | Zhenning Tao, Jens Rasmussen | 2011-01-25 |
| 7860408 | Interferometer for demodulating differential M-phase shift keying signal | Jens Rasmussen, Takafumi Terahara, Kentaro Nakamura, Takeshi Hoshida, George Ishikawa +7 more | 2010-12-28 |
| 7853148 | Optical add/drop multiplexer | Yuichi Akiyama, Takafumi Terahara, Hiroki Ooi, Jens Rasmussen, Akira Miura | 2010-12-14 |
| 7792428 | Optical add/drop multiplexer | Yuichi Akiyama, Takafumi Terahara, Hiroki Ooi, Jens Rasmussen, Akira Miura | 2010-09-07 |
| 7711270 | Optical node and optical add/drop multiplexer | Hiroki Ooi, Takafumi Terahara, Jens Rasmussen, Akira Miura, Yuichi Akiyama | 2010-05-04 |
| 7689074 | Optical reception apparatus compatible with DQPSK polarization multiplexing format | Jens Rasmussen | 2010-03-30 |
| 7684713 | Phase control apparatus and optical DQPSK receiver | Yoshikazu Terayama, Noriaki Mizuguchi, Eiji Ishikawa, Takashi Toyomaki, Kenichi Kaburagi +2 more | 2010-03-23 |
| 7676162 | Phase monitor used in optical receiver | Jens Rasmussen, Zhenning Tao, Noriaki Mizuguchi, Kenichi Kaburagi | 2010-03-09 |
| 7616900 | Optical signal degradation compensator | Jens Rasmussen, George Ishikawa | 2009-11-10 |
| 7613366 | Polarization mode dispersion compensator and polarization mode dispersion compensating method | Jens Rasmussen, George Ishikawa | 2009-11-03 |
| 7277608 | Optical transmitter | Jens Rasmussen | 2007-10-02 |
| 5080001 | Resin molded product, method of producing same, and air vent device using same | Yoshiyuki Ishibashi, Hideo Takahashi | 1992-01-14 |
| 4844953 | Elastic roller for fixing and method of producing the same | Chiaki Kato, Toshiyuki Hatta, Shinichi Toyooka, Masaya Nishi | 1989-07-04 |
| 4822615 | Antithrombic resin composition | Kouichi Iwata, Hideo Takahashi | 1989-04-18 |
| 4539113 | Fluororesin filter | Kazuichi Tomita, Hiroshi Mano, Fumio Matsuyama | 1985-09-03 |