Issued Patents All Time
Showing 76–78 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835117 | Manufacturing method for semiconductor laser with mesa stripe | Yasuo Ohba, Masayuki Ishikawa, Motoyuki Yamamoto, Yukio Watanabe | 1989-05-30 |
| 4809287 | Double-heterostructure semiconductor with mesa stripe waveguide | Yasuo Ohba, Miyoko Watanabe, Masayuki Ishikawa, Yukio Watanabe, Motoyuki Yamamoto | 1989-02-28 |
| 4792958 | Semiconductor laser with mesa stripe waveguide structure | Yasuo Ohba, Masayuki Ishikawa, Motoyuki Yamamoto, Yukio Watanabe | 1988-12-20 |