Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7406157 | Methods and apparatuses for determining loop characteristics using an extended voice-band modem | Sigang Qiu, Vedavalli G. Krishnan, Wesley H. Smith, Mandayam Krishnan | 2008-07-29 | $26,149,000 |
| 7103147 | Methods and apparatuses for determining loop characteristics using standard voice-band modem | Sigang Qiu, Vedavalli G. Krishna, Wesley H. Smith, Mandayam Krishnan, Bo Zhang | 2006-09-05 | $13,820,000 |