Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4924459 | Digital transmission interconnect signal | Eric H. Angell, Rong Fang, Byeong-Gi Lee, Jan-Dieter Spalink | 1990-05-08 |
| 4905228 | Digital transmission channel framing | Eric H. Angell, Rong Fang, Byeong-Gi Lee, Jan-Dieter Spalink | 1990-02-27 |
| 4716561 | Digital transmission including add/drop module | Eric H. Angell, Juan O. Azaret, Rong Fang, Byeong-Gi Lee, Brian C. Longwell +2 more | 1987-12-29 |
| 4606043 | Programmable automatic cable equalizer | Yen-Long Kuo, Charles F. Walker | 1986-08-12 |