Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10840406 | Optical semiconductor element and method of driving optical semiconductor element | Akira Higuchi, Toru Hirohata, Kazunori Tanaka, Kazuue Fujita, Yasufumi Takagi +2 more | 2020-11-17 |
| 8699538 | Quantum cascade laser | Tadataka Edamura, Kazuue Fujita, Tatsuo DOUGAKIUCHI | 2014-04-15 |
| 8654809 | Quantum cascade laser | Kazuue Fujita, Tadataka Edamura, Naota Akikusa | 2014-02-18 |
| 8374208 | Quantum cascade laser | Kazuue Fujita, Tadataka Edamura, Naota Akikusa | 2013-02-12 |
| 8330140 | Semiconductor light emitting device | Tadataka Edamura, Kazuue Fujita, Akira Higuchi, Naota Akikusa | 2012-12-11 |
| 7843981 | Quantum cascade laser | Tadataka Edamura, Naota Akikusa, Kazuue Fujita | 2010-11-30 |
| 7787735 | Waveguide structure and optical device | Hiroyasu Fujiwara, Akira Higuchi, Kazutoshi Nakajima | 2010-08-31 |
| 5173955 | Magnetooptic device and its driving method | Hitoshi Oda | 1992-12-22 |
| 4845535 | Light emitting semiconductor device | Ikuo Suemune, Yasuo Kan | 1989-07-04 |
| 4672577 | Three-dimensional integrated circuit with optically coupled shared memories | Masataka Hirose, Yukio Osaka, Tadashi Ae, Tadao Ichikawa, Noriyoshi Yoshida +1 more | 1987-06-09 |