Sun Yu
3Patents
2Active
3Granted
39Portfolio score
Filing activity: Jun 20, 2003 → Jul 31, 2012 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6995542B2 | Battery charger amusement device | Electricity | 12 | Expired |
| US8257136B2 | Dynamo powered toy | Human Necessities | 4 | Active |
| US8616933B2 | Dynamo powered toy | Human Necessities | 2 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.