Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4701930 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1987-10-20 |
| 4682196 | Multi-layered semi-conductor photodetector | Kazuo Sakai, Yuichi Matsushima, Shigeyuki Akiba | 1987-07-21 |
| 4665527 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1987-05-12 |
| 4660934 | Method for manufacturing diffraction grating | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1987-04-28 |
| 4653059 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1987-03-24 |
| 4653058 | Distributed feedback semiconductor laser with monitor | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1987-03-24 |
| 4648096 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1987-03-03 |
| 4633474 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1986-12-30 |
| 4589117 | Butt-jointed built-in semiconductor laser | Kazuo Sakai, Shigeyuki Akiba, Yuichi Matsushima | 1986-05-13 |
| 4573161 | Semiconductor laser | Kazuo Sakai, Yuichi Matsushima, Shigeyuki Akiba | 1986-02-25 |
| 4573158 | Distributed feedback semiconductor laser | Kazuo Sakai, Shigeyuki Akiba | 1986-02-25 |
| 4553239 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1985-11-12 |
| 4516243 | Distributed feedback semiconductor laser | Kazuo Sakai, Shigeyuki Akiba | 1985-05-07 |
| 4506367 | Distributed feedback semiconductor laser | Shigeyuki Akiba, Kazuo Sakai, Yuichi Matsushima | 1985-03-19 |