Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9733979 | Communication device | Nobuo Okabe, Yukiyo Akisada, Kazunori Miyazawa | 2017-08-15 |
| 9720168 | Wavelength selective optical switch having specified characteristics of WDM signal light beam | — | 2017-08-01 |
| 9704455 | Information display apparatus and information display method for superimposing additional information on an image | Yousuke Ishii, Kenji Oishi | 2017-07-11 |
| 9560637 | Management apparatus and communication system | Kazunori Miyazawa, Yukiyo Akisada | 2017-01-31 |
| 9350651 | Packet forwarding device and wireless communication system | Yukiyo Akisada, Kazunori Miyazawa | 2016-05-24 |
| 9306699 | Wavelength-selective switch array | — | 2016-04-05 |
| 9025094 | Wavelength selective optical switching devices | — | 2015-05-05 |
| 8780319 | Wavelength selective optical switch | — | 2014-07-15 |
| 8463126 | Optically variable filter array apparatus | — | 2013-06-11 |
| 8463125 | Optically variable filter array apparatus | — | 2013-06-11 |
| 8441726 | Optically variable filter apparatus and filter characteristic control method thereof | — | 2013-05-14 |
| 8437634 | Wavelength selective optical switch device | — | 2013-05-07 |
| 8107818 | Tunable filter | Changho Chong | 2012-01-31 |
| 7777957 | Optical filter and tunable filter | Naoyuki Mekada | 2010-08-17 |
| 6961503 | Planar lightwave circuit device and manufacturing method therefor | Michiharu Itou, Takashi Shiotani | 2005-11-01 |
| 6787867 | Planar lightwave circuit device and manufacturing method therefor | Michiharu Itou, Takashi Shiotani | 2004-09-07 |
| 6751011 | Characteristic measuring method and characteristic measuring system of wavelength division multiplexing optical amplifier | — | 2004-06-15 |