Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682346 | Nonvolatile semiconductor memory device having suitable writing efficiency | Hiroto Nakai, Tomoharu Tanaka | 1997-10-28 |
| 5627488 | Delay circuit, oscillation circuit and semiconductor memory device | Toru Tanzawa, Tomoharu Tanaka, Koji Sakui | 1997-05-06 |
| 5615148 | Nonvolatile semiconductor memory | Hiroto Nakai | 1997-03-25 |