Ching; Philip
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ching; Philip.The latest application filed is for "analog pll with switched capacitor resampling filter".
- Ching; Philip - Ontario CA
- Ching; Philip - Ottawa CA
| Patent | Date |
|---|---|
| Analog PLL with switched capacitor resampling filter Grant 7,078,946 - van der Valk , et al. July 18, 2 | 2006-07-18 |
| Method and apparatus for detecting dual tone alerting signal in telephone systems Grant 6,813,350 - Ching November 2, 2 | 2004-11-02 |
| Analog PLL with switched capacitor resampling filter App 20030155950 - van der Valk, Robertus Laurentius ; et al. | 2003-08-21 |
| Method and apparatus for detecting dual tone alerting signal in telephone systems App 20010033648 - Ching, Philip | 2001-10-25 |
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