Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9820021 | Methods and apparatus for determining a path in a communications network | Robert Friskney, Fiona Davis, Christopher Phillips, Song Dong | 2017-11-14 |
| 9100120 | Methods and apparatus for determining a path in a communications network | Robert Friskney, Fiona Davis, Christopher Phillips, Song Dong | 2015-08-04 |
| 7362777 | Concatenated transmission of synchronous data | Douglas Fisher, Nigel Bragg, Robert Friskney | 2008-04-22 |
| 6735392 | System and method for transmitting and restoring an optical signal | Siraj Nour Elahmadi, Paul Bullock, Kesavamurthy Nagaraj | 2004-05-11 |
| 6643464 | Constrained optical mesh protection for transmission systems | Peter David Roorda, Adrian Sparks | 2003-11-04 |
| 6606427 | Switch for optical signals | Alan Graves, Peter David Roorda, Robert Spagnoletti | 2003-08-12 |
| 6400861 | Optical demultiplexer architecture | Duncan Forbes, Robert Spagnoletti | 2002-06-04 |
| 6215864 | Method of accessing an IP in an | Devki Nandan Goyal | 2001-04-10 |
| 6101012 | Optical add/drop multiplexer/demultiplexer | David John Danagher, Alan Glen Solheim, Maurice O'Sullivan, Richard A. Habel, Kim B. Roberts +6 more | 2000-08-08 |
| 5970185 | Optical switches, modulators and transmitters | Ross Saunders | 1999-10-19 |
| 5959749 | Optical add/drop multiplexer/demultiplexer | David John Danagher, Alan Glen Solheim, Maurice O'Sullivan, Richard A. Habel, Kim B. Roberts +6 more | 1999-09-28 |