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Patent applications and USPTO patent grants for Kim; Kyoung Youn.The latest application filed is for "self-powered handrail sterilizing device and user information collecting device using handrail sterilizing device".
Patent | Date |
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Handrail sterilizer Grant D963,884 - Kim September 13, 2 | 2022-09-13 |
Self-powered handrail sterilizing device and information collecting device using handrail sterilizing device Grant 10,160,622 - Kim , et al. Dec | 2018-12-25 |
Self-powered Handrail Sterilizing Device And User Information Collecting Device Using Handrail Sterilizing Device App 20180099842 - KIM; Kyoung-Youn ;   et al. | 2018-04-12 |
Highly proton conductive crosslinked vinylsulfonic acid polymer electrolyte composite membranes and its preparation method for polymer electrolyte fuel cells Grant 8,871,406 - Choi , et al. October 28, 2 | 2014-10-28 |
Highly Proton Conductive Crosslinked Vinylsulfonic Acid Polymer Electrolyte Composite Membranes And Its Preparation Method For Polymer Electrolyte Fuel Cells App 20110059387 - Choi; Young Woo ;   et al. | 2011-03-10 |
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