Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6639849 | Nonvolatile semiconductor memory device programming second dynamic reference cell according to threshold value of first dynamic reference cell | Satoshi Takahashi | 2003-10-28 |
| 6611464 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Takao Akaogi, Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano, Hiromi Kawashima +1 more | 2003-08-26 |
| 6563738 | Nonvolatile semiconductor memory device having electrically and collectively erasable characteristics | Takao Akaogi, Nobuaki Takashina, Yasushi Kasa, Kiyoshi Itano, Hiromi Kawashima | 2003-05-13 |