Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12181737 | Optical switching apparatus | Yusuke Muranaka, Toshikazu Hashimoto | 2024-12-31 |
| 8971677 | Optical 90-degree hybrid circuit | Toshikazu Hashimoto, Yusuke Nasu, Kuninori Hattori, Hiroshi Takahashi | 2015-03-03 |
| 8737779 | Optical wavelength multi/demultiplexer | Tsutomu Kitoh, Shin Kamei, Toshikazu Hashimoto, Hiroshi Takahashi, Manabu Oguma | 2014-05-27 |
| 8649640 | Optical 90-degree hybrid circuit | Yusuke Nasu, Toshikazu Hashimoto, Kuninori Hattori, Hiroshi Takahashi | 2014-02-11 |
| 8588560 | Optical 90-degree hybrid circuit | Takashi Goh, Toshikazu Hashimoto, Yusuke Nasu, Kuninori Hattori, Hiroshi Takahashi | 2013-11-19 |
| 8554040 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2013-10-08 |
| 8538222 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Toshikazu Hashimoto, Tsutomu Kitoh, 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 | Tsutomu Kitoh, Shin Kamei, Toshikazu Hashimoto, Hiroshi Takahashi, Manabu Oguma | 2013-07-09 |
| 8467635 | Optical modulator | Yoshiyuki Doi, Takashi Yamada, Akimasa Kaneko | 2013-06-18 |
| 8463097 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2013-06-11 |
| 8150219 | Waveguide-type optical interferometer | Yusuke Nasu, Manabu Oguma, Yasuaki Hashizume, Yasuyuki Inoue, Hiroshi Takahashi +2 more | 2012-04-03 |
| 7899279 | Optical delay line interferometer | Yusuke Nasu, Kuninori Hattori, Toshikazu Hashimoto, Hiroshi Takahashi, Yasuyuki Inoue | 2011-03-01 |
| 7856163 | Planar lightwave circuit, design method for wave propagation circuit, and computer program | Takashi Saida, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa +4 more | 2010-12-21 |
| 7580597 | Optical functional circuit | Tsutomu Kitoh, Toshikazu Hashimoto, Takashi Saida, Hiroshi Takahashi, Masahiro Yanagisawa +3 more | 2009-08-25 |