Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12424848 | Power system | Taiichi Otsuji, Katsumi Iwatsuki, Masafumi YASHIMA, Masakazu Matsui, Hiroyuki Koshi | 2025-09-23 |
| 8494023 | Composite optical waveguide, variable-wavelength laser, and method of oscillating laser | Hiroyuki Yamazaki | 2013-07-23 |
| 8374469 | Optical waveguide | — | 2013-02-12 |
| 7715665 | Photonic crystal optical circuit and method for controlling the same | Jun Ushida | 2010-05-11 |
| 7376317 | Waveguide structure and method of manufacturing the same | — | 2008-05-20 |
| 7359606 | Photonic crystal optical circuit and method for controlling the same | Jun Ushida | 2008-04-15 |
| 7286738 | White light pulse generating method using nonlinear optical device | — | 2007-10-23 |
| 6631236 | Photonic crystal waveguide and directional coupler using the same | — | 2003-10-07 |
| 6541951 | Optical measurement of target-light waveform | Masayuki Shirane, Hiroyuki Yokoyama, Hisakazu Kurita | 2003-04-01 |
| 6416575 | Photonic crystal multilayer substrate and manufacturing method thereof | — | 2002-07-09 |
| 6363097 | Semiconductor laser with a rewritable wavelength stabilizer | Richard A. Linke | 2002-03-26 |
| 5887012 | Semiconductor laser array | — | 1999-03-23 |
| 5828058 | Optical fiber remote sensing system with electromagnetic wave measurement | — | 1998-10-27 |
| 5693965 | Laser diode having narrowed radiation angle characteristic | — | 1997-12-02 |
| 5661580 | SCM type of optical signal transmission system without clipping distortion | — | 1997-08-26 |
| 5568505 | Laser diode element with excellent intermodulation distortion characteristic | Tetsuro Okuda, Toshitaka Torikai | 1996-10-22 |
| 5553090 | Semiconductor multiquantum well structure and semiconductor laser therewith | — | 1996-09-03 |
| 5511089 | Semiconductor laser element with excellent high-temperature characteristic and capable of being readily mounted on an optical circuit board | — | 1996-04-23 |
| 5469459 | Laser diode element with excellent intermodulation distortion characteristic | Tetsuro Okuda, Toshitaka Torikai | 1995-11-21 |
| 5394429 | Distributed-feedback laser with improved analog modulation distortion characteristics and method for fabricating the same | Tetsuro Okuda, Toshitaka Torikai | 1995-02-28 |