Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11212214 | Parallel computer system, method of controlling a parallel computer system, and a non-temporary computer-readable medium that stores a program | Kenji Mizutani, Tatsuya Usuki | 2021-12-28 |
| 10749601 | Optical transceiver | — | 2020-08-18 |
| 10644822 | Network system | — | 2020-05-05 |
| 9628190 | Optical transmitter and optical communication device | Ichiro Ogura, Masashige Ishizaka | 2017-04-18 |
| 9500823 | Opto-electric integrated circuit and optical interposer | Daisuke Okamoto, Tatsuya Usuki | 2016-11-22 |
| 8693880 | Wavelength path communication node apparatus, wavelength path communication control method, and recording medium | Masahiro Sakauchi, Shigeru Nakamura, Itaru Nishioka, Kiyoshi Fukuchi | 2014-04-08 |
| 8676017 | Light control element and optical waveguide circuit | — | 2014-03-18 |
| 8315522 | Wavelength routing system | — | 2012-11-20 |
| 7113674 | Method of manufacturing a fiber-type optical coupler with slanting bragg diffraction gratings | Yoshinori Ohta | 2006-09-26 |
| 7076125 | Optical circuit element and production method therefor, array-form optical circuit element, optical circuit device using it | Hikaru Kouta, Mikio Oda, Tadahiko Hanada, Taro Kaneko | 2006-07-11 |
| 7020367 | Optical coupler | Kouichi Suzuki, Tadahiko Hanada | 2006-03-28 |
| 6870991 | Fiber-type optical coupler with slanting Bragg diffraction gratings and optical parts and apparatuses using the same | Yoshinori Ohta | 2005-03-22 |
| 6684013 | Optical waveguide device to be optically poled, method of manufacturing optical waveguide device to be optically poled, and method of optically poling optical waveguide device | Yuko Seki, Akio Furukawa, Tadahiko Hanada, Naoki Ofusa, Shigeru Yoneda | 2004-01-27 |
| 6389201 | Arrayed waveguide grating having arrayed waveguide employing taper structure | — | 2002-05-14 |
| 6226428 | Optical multiplexer/demultiplexer with optical waveguides and a diffraction grating | Takashi Saito | 2001-05-01 |
| 6134361 | Optical multiplexer/demultiplexer | — | 2000-10-17 |
| 5835270 | Optical isolator device | Tomoki Saito | 1998-11-10 |
| 5029988 | Birefringence diffraction grating type polarizer | — | 1991-07-09 |
| 4991937 | Birefringence diffraction grating type polarizer | — | 1991-02-12 |