Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847573 | Optical modulator | Tadashi Fukuzawa, Eizaburo Yamada, Hiroyoshi Matsumura | 1989-07-11 |
| 4835583 | Semiconductor device having strained superlattice buffer layers with In-doped GaAs substrate | Makoto Morioka, Tomoyoshi Mishima, Yoshifumi Katayama, Yasuhiro Shiraki | 1989-05-30 |