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Patent applications and USPTO patent grants for Choi; Hwa-kyung.The latest application filed is for "backlight unit of direct type".
Patent | Date |
---|---|
Backlight unit of direct type Grant 7,967,490 - Kim , et al. June 28, 2 | 2011-06-28 |
Illumination tool using the light emitting diode Grant D602,449 - Kim , et al. October 20, 2 | 2009-10-20 |
Backlight Unit Of Direct Type App 20090002988 - KIM; Dong-Soo ;   et al. | 2009-01-01 |
Method for manufacturing lens for led package App 20080254557 - Kim; Dong-Soo ;   et al. | 2008-10-16 |
Light emitting diode (LED) package Grant D549,187 - Park , et al. August 21, 2 | 2007-08-21 |
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