Hitaachi, Ltd.
1Patents
0Active
1Granted
27Portfolio score
Filing activity: Apr 30, 1997 → Apr 30, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5870218A | Nonvolatile semiconductor memory device which stores multi-value information | Physics | 62 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.