Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6301681 | Messaging communication protocol | Zongbo Chen, Richard W. Koralek, Brian D. Korek, Richard C. Beerman | 2001-10-09 |
| 6084952 | System and method for communicating electronic messages over a telephone network using acoustical coupling | Richard C. Beerman, Brian D. Korek, Zongbo Chen, Zhifang Du, Scott Fullam | 2000-07-04 |
| 6052812 | Messaging communication protocol | Zongbo Chen, Richard W. Koralek, Brian D. Korek, Richard C. Beerman | 2000-04-18 |