Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682346 | Nonvolatile semiconductor memory device having suitable writing efficiency | Toshio Yamamura, Tomoharu Tanaka | 1997-10-28 |
| 5615148 | Nonvolatile semiconductor memory | Toshio Yamamura | 1997-03-25 |
| 5615165 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Yoshiyuki Tanaka, Riichiro Shirota +8 more | 1997-03-25 |