Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8934475 | Distributed SIP-based transfer feature | Jiahe Zhuang, Henry Yao-Tsu Chen, Michael H. McClung, Jeffery A. Sanders | 2015-01-13 |
| 8121282 | Call park/retrieve using SIP | Jiahe Zhuang, Henry Yao-Tsu Chen, Michael H. McClung, Jeffery A. Sanders | 2012-02-21 |
| 7523203 | Shared distribution media resources in a communication network | Thang C Nguyen, Li Ji, Delon R. Whetten, Christopher E. Pearce | 2009-04-21 |
| 5093824 | Distributed protocol for improving the survivability of telecommunications trunk networks | Brian A. Coan, Mario P. Vecchi | 1992-03-03 |
| 4893306 | Method and apparatus for multiplexing circuit and packet traffic | Hung-Hsiang Jonathan Chao, Sang H. Lee | 1990-01-09 |
| 4782478 | Time division circuit switch | Chester M. Day, Jr., James N. Giacopelli, Nian-Chyi Huang | 1988-11-01 |