Du; Zhanqi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Du; Zhanqi.The latest application filed is for "electronic ballasts".
- Du; Zhanqi - Baldwin Park CA US
| Patent | Date |
|---|---|
| Phase controlled dimming LED driver system and method thereof Grant 9,167,641 - Shackle , et al. October 20, 2 | 2015-10-20 |
| Electronic Ballasts App 20140252991 - Shackle; Peter W. ; et al. | 2014-09-11 |
| Electronic ballasts with high-frequency-current blocking component or positive current feedback Grant 8,736,189 - Shackle , et al. May 27, 2 | 2014-05-27 |
| Phase controlled dimming LED driver system and method thereof Grant 8,203,276 - Shackle , et al. June 19, 2 | 2012-06-19 |
| Phase Controlled Dimming Led Driver System And Method Thereof App 20110148318 - SHACKLE; Peter W. ; et al. | 2011-06-23 |
| Method, System And Current Limiting Circuit For Preventing Excess Current Surges App 20100253245 - DU; Zhanqi ; et al. | 2010-10-07 |
| Phase Controlled Dimming Led Driver System And Method Thereof App 20100134038 - SHACKLE; Peter W. ; et al. | 2010-06-03 |
| Electronic Ballasts App 20080150447 - Shackle; Peter W. ; et al. | 2008-06-26 |
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