Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11652329 | Light source for Raman amplification, light source system for Raman amplification, Raman amplifier, and Raman amplifying system | Haruki Ogoshi | 2023-05-16 |
| 10938175 | Light source for Raman amplification, light source system for Raman amplification, Raman amplifier, and Raman amplifying system | Haruki Ogoshi | 2021-03-02 |
| 10139574 | Multi-core connector, connector, and connector connection mechanism | Kengo Watanabe, Tsunetoshi Saito, Katsuki Suematsu, Mitsuhiro IWAYA, Kohei KAWASAKI | 2018-11-27 |
| 9935721 | Optical communication method and optical communication system | — | 2018-04-03 |
| 8023781 | Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical signal multiplexing and demultiplexing function | Kazutaka Nara, Haruki Urabe, Tsunetoshi Saitoh | 2011-09-20 |
| 8014644 | Optical waveguide, optical waveguide module and method for forming optical waveguide | Masao Shinoda | 2011-09-06 |
| 7885493 | Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical signal multiplexing and demultiplexing function | Kazutaka Nara, Haruki Urabe, Tsunetoshi Saitoh | 2011-02-08 |
| 7469079 | Broadband wavelength multiplexing and demultiplexing filter and optical splitter with optical signal multiplexing and demultiplexing function | Kazutaka Nara, Haruki Urabe, Tsunetoshi Saitoh | 2008-12-23 |
| 7338217 | Functional optical module | Kouki Sato, Masato Shiino, Hajime Kazami | 2008-03-04 |
| 7040814 | Functional optical module | Kouki Sato, Masato Shiino, Hajime Kazami | 2006-05-09 |
| 7013075 | Variable optical attenuator | Kouki Sato | 2006-03-14 |
| 6876810 | Variable optical attenuator | Kouki Sato | 2005-04-05 |
| 6730535 | Silicon device manufacturing method, silicon device, and optical component | Koji Morimoto, Kouki Sato, Kazuhiro Toriumi, Taichi Tsuchiya | 2004-05-04 |
| 6636683 | Variable optical attenuator | Kouki Sato | 2003-10-21 |
| 5808768 | Optical telecommunications system | Masateru Tadakuma, Hijiri Nimura, Haruki Ogoshi | 1998-09-15 |
| 5748351 | Optical power detector, and multi-level digital transmission system incorporating the same | — | 1998-05-05 |