Hatachi Video & Information System, Inc.
1Patents
0Active
1Granted
21Portfolio score
Filing activity: Jun 22, 1998 → Jun 22, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6188654A | Method and apparatus for recording/reproducing by pre-pits detection | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.