Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5362662 | Method for producing semiconductor memory device having a planar cell structure | Yuichi Ando | 1994-11-08 |
| 5308781 | Semiconductor memory device | Yuichi Ando, Norio Yoshida, Masao Kiyohara | 1994-05-03 |