Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686022 | Phosphorescent phosphor | Yoshihiko Murayama, Yasumitsu Aoki, Takashi Matsuzawa | 1997-11-11 |
| 5684739 | Apparatus and method for determining current or voltage of a semiconductor device | — | 1997-11-04 |
| 5661056 | Non-volatile semiconductor memory device and method of manufacturing the same | — | 1997-08-26 |
| 5641696 | Method of forming diffusion layer and method of manufacturing nonvolatile semiconductor memory device | — | 1997-06-24 |