Varioptic
4Patents
2Active
4Granted
38Portfolio score
Filing activity: Oct 7, 1998 → Jan 31, 2007 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USRE39874E1 | Lens with variable focus | General | 29 | Expired |
| US7443596B1 | Drop centering device | Performing Operations; Transporting | 16 | Expired |
| US7791814B2 | Optical electrowetting device | Physics | 16 | Active |
| US7780874B2 | Multi-phase liquid composition and optical electrowetting device that incorporates the same | Physics | 8 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.