VOICECRAFT, INC.
5Patents
0Active
5Granted
28Portfolio score
Filing activity: Apr 6, 1987 → Jun 7, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4969192A | Vector adaptive predictive coder for speech and audio | Physics | 170 | Expired |
| US4868867A | Vector excitation speech or audio coder for transmission or storage | Physics | 132 | Expired |
| US6731811B1 | Scalable predictive coding method and apparatus | Electricity | 56 | Expired |
| US7289675B2 | Scalable predictive coding method and apparatus | Electricity | 6 | Expired |
| US6917714B2 | Scalable predictive coding method and apparatus | Electricity | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.