Lightspan, LLC
2Patents
0Active
2Granted
18Portfolio score
Filing activity: Dec 12, 2001 → Jul 23, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6654188B2 | Compositions and devices for thermo optically controlled switching and filtering | Physics | 5 | Expired |
| US7139463B2 | Compositions and devices for thermooptically controlled switching and filtering | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.