Htachi, Ltd.
4Patents
0Active
4Granted
25Portfolio score
Filing activity: Jun 22, 1998 → Mar 2, 2007
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7184491B2 | Wireless communication apparatus | Electricity | 7 | Expired |
| US6188654A | Method and apparatus for recording/reproducing by pre-pits detection | Physics | 7 | Expired |
| USD570386S1 | Video camera with recorder and player | General | 2 | Expired |
| US6256341A | Spread spectrum receiver using digital matched filter | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.