Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7474147 | Frequency shift keying signal demodulator method and apparatus | — | 2009-01-06 |
| 7428304 | Method and apparatus for detecting subscriber alerting signal tones and customer premises equipment alerting signal tones to non-echo canceling modems | Sheela Prabhakar, Narasimha Gopalakrishna Pai | 2008-09-23 |