Zen Design Group, Ltd.
6Patents
3Active
6Granted
35Portfolio score
Filing activity: Nov 6, 2002 → Sep 17, 2008 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6877875B2 | Canted head-mounted light | Mechanical Engineering; Lighting; Heating | 71 | Expired |
| US6995542B2 | Battery charger amusement device | Electricity | 12 | Expired |
| US8298036B2 | Dynamo powered amusement device | Human Necessities | 5 | Active |
| US6896390B2 | Animate form headlamp | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US7679320B2 | Amusement apparatus operative as a dynamo battery charger | Electricity | 1 | Active |
| USRE42469E1 | Battery charger amusement device | General | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.