Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9420080 | Method and apparatus for providing privacy for telephone conversations | Bing Chen, John D. Francis, Diane Nawrocki, David Nemec | 2016-08-16 |
| 9178478 | Method and apparatus for providing privacy for telephone conversations | Bing Chen, John D. Francis, Diane Nawrocki, David Nemec | 2015-11-03 |
| 7831025 | Method and system for administering subjective listening test to remote users | John D. Francis, James H. James | 2010-11-09 |
| 7738643 | Method for troubleshooting echo on teleconference bridge | Bing Chen, John D. Francis, Diane Nawrocki, David Nemec | 2010-06-15 |