Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6215570 | Optical switch | Andrew David Ellis, David Arthur Owen Davies | 2001-04-10 |
| 6091524 | Optical switch | Andrew David Ellis, David Arthur Owen Davies | 2000-07-18 |
| 5742415 | Optical switching device | Robert John Manning, David Patrick, Andrew David Ellis | 1998-04-21 |
| 5504617 | Optical time domain reflectometry | — | 1996-04-02 |
| 5448059 | Optical time domain relectometry with optical amplifier for extended range and/or sensitivity | Lutz C. Blank | 1995-09-05 |
| 5343286 | OTDR having optically switched amplified output onto test fibre to suppress optical amplifier noise between OTDR pluses | Peter J. Keeble, Christopher Rowe | 1994-08-30 |
| 5298965 | OTDR using distributed optical amplification in optical waveguide under test | Lutz C. Blank | 1994-03-29 |