Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8545111 | Optical module | Takaharu Ohyama, Yoshiyuki Doi, Ikuo Ogawa, Yasuaki Tamura, Yuichi Suzuki | 2013-10-01 |
| 8467635 | Optical modulator | Yoshiyuki Doi, Takashi Yamada, Yohei Sakamaki | 2013-06-18 |
| 7995876 | Arrayed waveguide grating circuit | Tomoyuki Yamada, Mitsuru Nagano, Mikitaka Ito, Toshio Watanabe, Takayuki Mizuno +1 more | 2011-08-09 |
| 7400800 | Arrayed waveguide grating type optical multiplexer/demultiplexer circuit | Tsutomu Kitoh, Yasuyuki Inoue, Mikitaka Ito, Yoshinori Hibino | 2008-07-15 |
| 6898345 | Optical multiplexer and method for its production | Katsunari Okamoto | 2005-05-24 |
| 6842560 | Optical multiplexing circuit and optical multiplexer | Yoshiki Yamauchi, Kouichi Fujisaki, Takashi Asaoka, Yoshihisa Sakai | 2005-01-11 |
| 6718140 | Optical wavelength division multiplexing transmission network device | Shin Kamei, Senichi Suzuki, Kuniharu Kato | 2004-04-06 |
| 6320888 | Frequency stabilized laser and method for preparing thereof | Takuya Tanaka, Hiroshi Takahashi, Akira Himeno, Yasuyuki Inoue | 2001-11-20 |
| 6304687 | Optical waveguide circuit, its manufacturing method and optical waveguide module having the optical waveguide circuit | Yasuyuki Inoue, Hiroshi Takahashi, Fumiaki Hanawa, Kuninori Hattori, Kenji Yokoyama +9 more | 2001-10-16 |
| 6304706 | Planar lightwave circuit | Akio Sugita, Mikitaka Itoh | 2001-10-16 |
| 6229938 | WDM filter | Yoshinori Hibino, Akira Himeno, Makoto Abe, Takuya Tanaka, Shin Kamei | 2001-05-08 |