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    NANOSTRUCTURED MEMBRANE FILTER SYSTEM FOR RAPID PURIFICATION OF WATER
    1.
    发明申请
    NANOSTRUCTURED MEMBRANE FILTER SYSTEM FOR RAPID PURIFICATION OF WATER 有权

    公开(公告)号：US20220184562A1

    公开(公告)日：2022-06-16

    申请号：US17310728

    申请日：2020-04-06

    申请人： VERSITECH LTD.

    发明人： Hao GUO ,  Xianhui LI ,  Chuyang TANG

    IPC分类号： B01D69/12 ,  B01D71/60 ,  B01D71/02 ,  B01D71/38 ,  B01D71/66 ,  B01D67/00 ,  B01D61/02 ,  C02F1/44

    摘要： A nanostructured composite membrane filter for rapid water purification and methods for preparing the nanostructured composite membrane filter are provided. The nanostructured composite membrane includes a silver layer having a plurality of silver functionalized nanofibers for disinfecting microorganisms of water, and a chemical modified layer having a plurality of chemical modified nanofibers for removing impurities from the water. The plurality of silver functionalized nanofibers includes a plurality of polyvinyl alcohol (PVA) nanofibers coated with polydopamine (PDA) and silver, and each of the plurality of chemical modified nanofibers includes a polymer matrix such as polyvinyl alcohol (PVA) and anionic polyelectrolytes such as poly (sodium styrenesulfonate) (PSSNa) for capturing metal ions of the water.

    AC-TO-DC AND DC-TO-AC POWER CONVERSION
    3.
    发明申请
    AC-TO-DC AND DC-TO-AC POWER CONVERSION 有权

    公开(公告)号：US20220140751A1

    公开(公告)日：2022-05-05

    申请号：US17434463

    申请日：2020-03-10

    申请人： VERSITECH LTD.

    发明人： Wenlong QI ,  Sinan LI ,  Siew Chong TAN ,  Shu Yuen HUI

    IPC分类号： H02M7/797

    摘要： A power converter circuit includes: a direct current (DC) side; a first passive network; a first current switching network; at least one floating capacitor; a second current switching network; a second passive network; and an alternating current (AC) side. The first passive network is connected between the DC side and the first current switching network for linking the DC side and the first current switching network. The first current switching network comprises at least four serially linked switches for switching the power converter circuit between switching cycles. The at least one floating capacitor is connected to the first current switching network. The second current switching network comprises two pairs of switches for providing an interface between the first current switching network and the second passive network. The second passive network is connected between the second current switching network and the AC side.