Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5568419 | Non-volatile semiconductor memory device and data erasing method therefor | Shigeru Atsumi, Masao Kuriyama, Hironori Banba, Akira Umezawa | 1996-10-22 |
| 4956816 | Non-volatile semiconductor memory having improved testing circuitry | Shigeru Atsumi, Sumio Tanaka, Shinji Saito | 1990-09-11 |