Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887877 | Optical devices and optical integrated circuits | Hiroaki Inoue, Shinji Sakano, Hitoshi Nakamura, Hiroyoshi Matsumura | 1989-12-19 |
| 4887273 | Intercalation compound and generator of coherent radiation using the same | Kiichi Komatsubara, Seiichi Tanuma, Katsuya Okabe | 1989-12-12 |
| 4861130 | Optical modulating device utilizing polariton substance | Hiroyoshi Matsumura, Hiroaki Inoue, Tadashi Fukuzawa, Naoki Chinone | 1989-08-29 |
| 4840446 | Photo semiconductor device having a multi-quantum well structure | Hitoshi Nakamura, Shinji Sakano, Hiroaki Inoue, Hiroyoshi Matsumura | 1989-06-20 |
| 4838633 | Semiconductor device with high speed signal transmission arrangement utilizing light | Hiroyoshi Matsumura | 1989-06-13 |
| 4828592 | Polarization plane maintaining optical fiber fabricating method | Hiroyoshi Matsumura, Tsuneo Suganuma | 1989-05-09 |
| 4813757 | Optical switch including bypass waveguide | Shinji Sakano, Hiroaki Inoue, Hiroyoshi Matsumura, Hitoshi Nakamura, Naoki Chinone | 1989-03-21 |