Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5987112 | International call back technique with reduced post dialing delay | Arvind S Chakravarti, Chi K. Lam, Yuk-Ming Peter Lam, Henry Shen, Nancy Y. Tai | 1999-11-16 |
| 5751792 | System and method for providing a message system subscriber with a roaming mailbox | Nga V. Chau, Henry Shen, Agnes C. Tow, Gang Yang | 1998-05-12 |