Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934458 | Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal | Roger Brown, Darren Vass, Graham Butler, Michael Leach | 2005-08-23 |
| 6747778 | Method and apparatus for generating a pulse width modulated signal and optical attenuator controlled by a pulse width modulated signal | Roger Brown, Darren Vass, Graham Butler, Michael Leach | 2004-06-08 |
| 6606447 | Optical attenuator including dual control loops | Roger Brown | 2003-08-12 |