Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9306670 | Optical coupling/splitting device, two-way optical propagation device, and optical-transmit-receive system | Masamichi Fujiwara, Kenichi Suzuki, Naoto Yoshimoto, Manabu Oguma, Toshio Watanabe +2 more | 2016-04-05 |
| 9116305 | Arrayed waveguide grating, optical module provided with said arrayed waveguide grating, and optical communications system | Hirotaka Nakamura, Shinya Tamaki, Shunji Kimura, Takayuki Mizuno, Hiroshi Takahashi +1 more | 2015-08-25 |
| 8787710 | Wideband interferometer type polarization light beam combiner and splitter | Takayuki Mizuno, Takashi Goh, Hiroshi Yamazaki, Shin Kamei | 2014-07-22 |
| 8737779 | Optical wavelength multi/demultiplexer | Shin Kamei, Toshikazu Hashimoto, Yohei Sakamaki, Hiroshi Takahashi, Manabu Oguma | 2014-05-27 |
| 8554040 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2013-10-08 |
| 8538222 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2013-09-17 |
| 8483525 | Optical wavelength multiplexing/demultiplexing circuit, optical module using optical wavelength multiplexing/demultiplexing circuit, and communication system | Shin Kamei, Toshikazu Hashimoto, Yohei Sakamaki, Hiroshi Takahashi, Manabu Oguma | 2013-07-09 |
| 8463097 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2013-06-11 |
| 8369666 | Optical wavelength multiplexing/ de-multiplexing circuit | Shin Kamei, Masaki Kohtoku, Tomohiro Shibata, Takuya Tanaka, Yasuyuki Inoue +1 more | 2013-02-05 |
| 7856163 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2010-12-21 |
| 7590312 | Interferometer optical switch and variable optical attenuator | Takayuki Mizuno, Hiroshi Takahashi, Manabu Oguma, Shunichi Souma | 2009-09-15 |
| 7580597 | Optical functional circuit | Yohei Sakamaki, Toshikazu Hashimoto, Takashi Saida, Hiroshi Takahashi, Masahiro Yanagisawa +3 more | 2009-08-25 |
| 7400800 | Arrayed waveguide grating type optical multiplexer/demultiplexer circuit | Yasuyuki Inoue, Mikitaka Ito, Yoshinori Hibino, Akimasa Kaneko | 2008-07-15 |
| 7397977 | Wave transmission medium and waveguide circuit | Toshikazu Hashimoto, Ikuo Ogawa, Takeshi Kitagawa, Senichi Suzuki, Masahiro Yanagisawa +8 more | 2008-07-08 |
| 7085438 | Optical multi/demultiplexing circuit equipped with phase generating device | Takayuki Mizuno, Manabu Oguma, Yasuyuki Inoue | 2006-08-01 |
| 6937797 | Planar lightwave circuit and optical circuit | Takayuki Mizuno, Yasuyuki Inoue, Yoshinori Hibino, Mikitaka Itoh, Takashi Saida +1 more | 2005-08-30 |
| 6735358 | Optical multiplexer and optical demultiplexer | Yasuyuki Inoue, Manabu Oguma, Yoshinori Hibino, Kaname Jinguji | 2004-05-11 |
| 6606433 | Optical multi/demultiplexer | Manabu Oguma, Akira Himeno, Kaname Jinguji, Yoshinori Hibino | 2003-08-12 |