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Patent applications and USPTO patent grants for Han; Eun Seok.The latest application filed is for "quadrifilar helical antenna".
Patent | Date |
---|---|
Quadrifilar helical antenna Grant 7,978,148 - O'Neill , et al. July 12, 2 | 2011-07-12 |
Quadrifilar Helical Antenna App 20090201215 - O'NEILL, JR.; GREGORY A. ;   et al. | 2009-08-13 |
Quadrifilar helical antenna Grant 7,489,281 - O'Neill, Jr. , et al. February 10, 2 | 2009-02-10 |
Quadrifilar helical antenna App 20080122733 - O'Neill; Gregory A. ;   et al. | 2008-05-29 |
Quadrifilar helical antenna Grant 7,245,268 - O'Neill, Jr. , et al. July 17, 2 | 2007-07-17 |
Quadrifilar helical antenna App 20060022891 - O'Neill; Gregory A. JR. ;   et al. | 2006-02-02 |
Method and apparatus for reducing SAR exposure in a communications handset device App 20050024275 - Jo, Young-Min ;   et al. | 2005-02-03 |
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