Walker; Robert Graham
Patent Applications and Registrations
Patent applications and USPTO patent grants for Walker; Robert Graham.The latest application filed is for "optical modulator with pre-determined frequency chirp".
- Walker; Robert Graham - Northampton GB
| Patent | Date |
|---|---|
| Polarization rotators Grant 7,204,932 - Johnstone , et al. April 17, 2 | 2007-04-17 |
| Semiconductor optical device Grant 7,184,207 - Walker , et al. February 27, 2 | 2007-02-27 |
| Guided wave spatial filter Grant 7,174,080 - Walker February 6, 2 | 2007-02-06 |
| Optical modulators operated in parallel push-pull mode Grant 7,082,237 - Walker , et al. July 25, 2 | 2006-07-25 |
| Optical modulator with pre-determined frequency chirp App 20060120655 - Walker; Robert Graham | 2006-06-08 |
| Photonic integrated device Grant 7,035,486 - Griffin , et al. April 25, 2 | 2006-04-25 |
| Optical modulator App 20050147351 - Johnstone, Robert Ian ; et al. | 2005-07-07 |
| Optical modulators operated in parallel push-pull mode App 20050123242 - Walker, Robert Graham ; et al. | 2005-06-09 |
| Polarisation rotators App 20050095741 - Johnstone, Robert Ian ; et al. | 2005-05-05 |
| Photonic integrated device App 20050069240 - Griffin, Robert ; et al. | 2005-03-31 |
| Guided wave spatial filter App 20040131310 - Walker, Robert Graham | 2004-07-08 |
| Optical modulator with pre-determined frequency chirp App 20030190107 - Walker, Robert Graham | 2003-10-09 |
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