Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879725 | Semiconductor laser device having extended facet life | Hidenori Kawanishi, Masahiro Yamaguchi, Hiroshi Hayashi, Shinji Kaneiwa | 1989-11-07 |
| 4878223 | Semiconductor laser array device | Hiroyuki Hosoba, Mitsuhiro Matsumoto, Mototaka Taneya, Sadayoshi Matsui | 1989-10-31 |
| 4853936 | Index guided semiconductor laser device | Sadayoshi Matsui, Shinji Kaneiwa, Masahiro Yamaguchi, Mototaka Taneya, Mitsuhiro Matsumoto | 1989-08-01 |
| 4819244 | Semiconductor laser device | Saburo Yamamoto, Hiroshi Hayashi | 1989-04-04 |
| 4819245 | Semiconductor laser device having substriped channels for forming an active layer which is thin in an inside portion | Mototaka Taneya, Hiroshi Hayashi, Saburo Yamamoto | 1989-04-04 |
| 4815089 | Semiconductor laser | Nobuyuki Miyauchi, Shigeki Maei, Osamu Yamamoto, Hiroshi Hayashi, Saburo Yamamoto | 1989-03-21 |