Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5150191 | P-type II-VI compound semiconductor doped | Tsutomu Uemoto, Atsushi Kamata, Hiroshi Mitsuhashi | 1992-09-22 |
| 5065404 | Transverse-mode oscillation semiconductor laser device | Masaki Okajima, Genichi Hatakoshi, Masayuki Ishikawa, Yutaka Uematsu | 1991-11-12 |
| 4974233 | Semiconductor laser device | Nobuo Suzuki, Motoyasu Morinaga, Hideto Furuyama, Yuzo Hirayama, Hajime OKUDA +1 more | 1990-11-27 |
| 4858241 | Semiconductor laser device | Nobuo Suzuki, Motoyasu Morinaga, Hideto Furuyama, Yuzo Hirayama, Hajime OKUDA +1 more | 1989-08-15 |
| 4691321 | Semiconductor laser device having current confining and built-in waveguide structure | Yukio Watanabe, Naohiro Shimada, Masaki Okajima | 1987-09-01 |
| 4647953 | Semiconductor laser device and method for manufacturing the same | Masaki Okajima, Yuhei Muto | 1987-03-03 |
| 4640737 | Dry etching method of compound semiconductor | Hiroko Nagasaka | 1987-02-03 |
| 4635268 | Semiconductor laser device having a double heterojunction structure | Masaki Okajima, Yuhei Muro | 1987-01-06 |