Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6456639 | Semiconductor light emitting device with II-VI group semiconductor contact layer containing alkali metal impurity, method of producing the same, and optical device including same | Akira Ishibashi, Yoshinori Hatanaka, Masaharu Nagai | 2002-09-24 |
| 6414975 | Semiconductor light emitting device with II-VI group semiconductor contact layer containing alkali metal impurity, method of producing same, and optical device including same | Akira Ishibashi, Yoshinori Hatanaka, Masaharu Nagai | 2002-07-02 |