K.K. Video Research
5Patents
0Active
5Granted
25Portfolio score
Filing activity: Mar 29, 1991 → Aug 30, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5896554A | Status monitoring apparatus for car radio | Electricity | 92 | Expired |
| US6487719B1 | Method and apparatus for monitoring TV channel selecting status | Electricity | 85 | Expired |
| US5162905A | Automatic commercial message recognition and monitoring device | Electricity | 76 | Expired |
| US5973750A | Television channel selection monitoring apparatus | Electricity | 37 | Expired |
| US6466765B1 | Portable radio listening status recorder | Electricity | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.