Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646920 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Yasushi Kasa, Kiyoshi Itano | 2003-11-11 |
| 6611464 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Takao Akaogi, Yasushi Kasa, Kiyoshi Itano, Hiromi Kawashima, Minoru Yamashita +1 more | 2003-08-26 |
| 6563738 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Takao Akaogi, Yasushi Kasa, Kiyoshi Itano, Hiromi Kawashima, Minoru Yamashita | 2003-05-13 |