Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8532137 | Network architecture for a packet aware transport network | Luis Aguirre-Torres, Robert Duncan Doverspike, Charles Robert Kalmanek, Jr., Kadangode K. Ramakrishnan | 2013-09-10 |
| 7570886 | Network with optical bandwidth on demand | Martin Birk, Kenneth Duell, Hossein Eslambolchi, Kathleen Tse, Simon S. Zelingher | 2009-08-04 |
| 7167444 | Family ring protection technique | — | 2007-01-23 |
| 6452906 | Fault detection and isolation in a synchronous optical network (SONET) and in a synchronous digital hierarchy (SDH) network | Sid Chaudhuri, Peter M. Dollard, Simon S. Zelingher | 2002-09-17 |
| 6278689 | Optical cross-connect restoration technique | John Lester Strand | 2001-08-21 |