Cheng; David Ki Wai
Patent Applications and Registrations
Patent applications and USPTO patent grants for Cheng; David Ki Wai.The latest application filed is for "chipless microwave identification tag".
- Cheng; David Ki Wai - Hong Kong CN
| Patent | Date |
|---|---|
| Chipless microwave identification tag Grant 8,274,368 - Yung , et al. September 25, 2 | 2012-09-25 |
| Chipless Microwave Identification Tag App 20090267739 - Yung; Kai Leung ; et al. | 2009-10-29 |
| Core having magnetic properties Grant 7,381,483 - Cheng , et al. June 3, 2 | 2008-06-03 |
| Core and composition having magnetic properties App 20050151123 - Cheng, Ka Wai Eric ; et al. | 2005-07-14 |
| Composite magnetic material App 20030235705 - Cheng, Ka Wai Eric ; et al. | 2003-12-25 |
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