Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6992930 | Semiconductor memory device, method for driving the same and portable electronic apparatus | Masaru Nawaki, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata, Kohji Hamaguchi | 2006-01-31 |
| 6985376 | Nonvolatile semiconductor storage apparatus having reduced variance in resistance values of each of the storage states | — | 2006-01-10 |
| 6982906 | Electrically programmable and electrically erasable semiconductor memory device | Masaru Nawaki, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata | 2006-01-03 |
| 6894929 | Method of programming semiconductor memory device having memory cells and method of erasing the same | Masaru Nawaki, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata | 2005-05-17 |
| 6831872 | Semiconductor memory device and method for correcting a reference cell | — | 2004-12-14 |
| 6559710 | Raised voltage generation circuit | — | 2003-05-06 |