Volt Delta Resources, LLC
6Patents
4Active
6Granted
40Portfolio score
Filing activity: Jan 17, 1974 → Jun 15, 2012 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4276597A | Method and apparatus for information storage and retrieval | Emerging Cross-Sectional Technologies | 190 | Expired |
| US6999563B1 | Enhanced directory assistance automation | Electricity | 45 | Expired |
| US9117453B2 | Method and system for processing parallel context dependent speech recognition results from a single utterance utilizing a context database | Physics | 12 | Active |
| US8233608B2 | Method of and system for automatically switching between free directory assistance service and chargeable directory assistance service | Electricity | 3 | Active |
| US7831031B2 | Method and system for operator services automation using an operator services switch | Electricity | 0 | Active |
| US8515048B2 | Method of and system for automatically switching between free directory assistance service and chargeable directory assistance service | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.