Cho; Ching-Fai
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cho; Ching-Fai.The latest application filed is for "compact stripline low frequency band reject filter".
- Cho; Ching-Fai - La Canada CA
- Cho; Ching-Fai - Tujunga CA
| Patent | Date |
|---|---|
| Printed circuit board filter having rows of vias defining a quasi cavity that is below a cutoff frequency Grant 8,008,997 - Cho August 30, 2 | 2011-08-30 |
| Compact stripline low frequency band reject filter App 20090091402 - Cho; Ching-Fai | 2009-04-09 |
| Wide frequency band transition between via RF transmission lines and planar transmission lines Grant 5,757,252 - Cho , et al. May 26, 1 | 1998-05-26 |
| Variable directional coupler Grant 4,814,780 - Sterns , et al. March 21, 1 | 1989-03-21 |
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