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    Filter medium, method for manufacturing same, and filter unit comprising same
    1.
    发明授权
    Filter medium, method for manufacturing same, and filter unit comprising same 有权

    公开(公告)号：US11478734B2

    公开(公告)日：2022-10-25

    申请号：US16470199

    申请日：2017-12-13

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： In Yong Seo ,  Ui Young Jeong

    IPC: B01D39/16 ,  B01D63/08 ,  B01D65/02

    Abstract: A filter medium is provided. The filter medium according to an embodiment of the present invention comprises: a first support body having a plurality of pores; a nanofiber web comprising nanofibers disposed on upper and lower sides of the first support body and forming a three dimensional network structure; and a second support body having a plurality of pores interposed between the first support body and the nanofiber web, wherein the nanofiber web is realized as a filter medium that satisfies: (1) an elongation of 25% or more, (2) an air permeability of 0.1 to 2.00 cfm, and 3) porosity of 60%˜85%. Accordingly, since the filter medium has a fixed level of mechanical properties of the nanofiber web, the shape, structure deformation, and damage of the filter medium are minimized and a flow path is smoothly secured during a water treatment operation so that the filter medium can have a high flow rate. In addition, since the filter medium of the present invention has a prolonged use life due to excellent durability of the filter medium even at high pressure applied during backwashing, and has excellent filtration efficiency and water permeability, the filter medium can be applied in various ways in various water treatment fields.

    Gas filter
    2.
    发明授权
    Gas filter 有权

    公开(公告)号：US10751662B2

    公开(公告)日：2020-08-25

    申请号：US15572351

    申请日：2016-05-18

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： In Yong Seo ,  Ui Young Jeong

    IPC: B01D39/00 ,  B01D46/52 ,  B01D53/00 ,  B01D53/04 ,  B01D53/22 ,  B01D39/08 ,  B01D39/16 ,  B01D67/00 ,  B01D69/12 ,  B01D69/10 ,  B01D69/02 ,  B01D71/02

    Abstract: Provided is a gas filter, which includes an adsorptive membrane for adsorbing foreign substances contained in a gas, wherein the adsorptive membrane has a corrugated structure folded in a number of times or a structure having a plurality of projections, in order to increase a contact surface area of the gas per unit area, and wherein the adsorptive membrane includes: a support member having a plurality of first pores; and a first adsorptive member which is stacked on the support member and has a plurality of second pores formed therein and which is made by accumulating ion exchange nanofibers for adsorbing foreign substances.

    Polymer electrolyte, lithium secondary battery using same, and method for manufacturing lithium secondary battery
    4.
    发明授权
    Polymer electrolyte, lithium secondary battery using same, and method for manufacturing lithium secondary battery 有权

    公开(公告)号：US10135092B2

    公开(公告)日：2018-11-20

    申请号：US14797431

    申请日：2015-07-13

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： Won Gil Choi ,  Ju Hee Jang ,  Seung Yun Rho ,  In Yong Seo

    IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0565 ,  H01M10/0525 ,  H01B1/12 ,  H01M10/052

    Abstract: Provided are a polymer electrolyte, a lithium secondary battery using the same, and a manufacturing method thereof, in which a gel polymer electrolyte is formed from a monomer for forming a gel polymer by a rapid polymerization reaction, when using a porous nanofiber web as an electrolyte matrix, and injecting an organic electrolytic solution formed by mixing the gel polymer forming monomer and a polymerization initiator, to induce an addition polymerization reaction, but the porous nanofiber web maintains a web-like shape. The polymer electrolyte includes: a separator made of a porous nanofiber web having a plurality of nanofibers; and a gel polymer portion impregnated in the porous nanofiber web. the gel polymer portion is formed by impregnating an electrolytic solution containing a non-aqueous organic solvent, a lithium salt solute, a gel polymer forming monomer, and a polymerization initiator in the porous nanofiber web and polymerizing the gel polymer forming monomer.

    Flexible electromagnetic wave shielding material, electromagnetic wave shielding-type circuit module comprising same and electronic device furnished with same
    7.
    发明授权
    Flexible electromagnetic wave shielding material, electromagnetic wave shielding-type circuit module comprising same and electronic device furnished with same 有权

    公开(公告)号：US11528833B2

    公开(公告)日：2022-12-13

    申请号：US16468894

    申请日：2017-12-12

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： In Yong Seo ,  Ui Young Jeong ,  Jun Woo Lee

    IPC: H05K9/00 ,  H05K7/20

    Abstract: Electromagnetic wave shielding material including a conductive fiber web with multiple pores and a heat dissipation unit provided in at least some pores that is so excellent in flexibility, elasticity, and creasing/recovery that it can be changed in shape freely and brought in complete contact with a surface where the material is to be disposed even if the surface has a curved shape, uneven portions, or stepped portions, thus exhibiting excellent electromagnetic wave shielding performance and prevent deterioration thereof despite various shape changes. Since heat dissipation performance is excellent, heat generated in an electromagnetic wave source can be rapidly conducted and released. Even if parts are provided in a narrow area at high density, the material can be brought in close contact with mounted parts by overcoming a tight space between the parts and a stepped portion. The invention is employed for light, thin, short, and small or flexible devices.

    Filter medium, manufacturing method therefor, and filter unit comprising same
    8.
    发明授权
    Filter medium, manufacturing method therefor, and filter unit comprising same 有权

    公开(公告)号：US11364470B2

    公开(公告)日：2022-06-21

    申请号：US16632630

    申请日：2018-07-23

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： Ui Young Jeong ,  In Yong Seo

    IPC: B01D63/00 ,  B01D63/08 ,  B01D69/02 ,  B01D69/06 ,  B01D69/10 ,  B01D71/34 ,  D04H1/728 ,  B01D67/00

    Abstract: A filter medium including: a porous first support; nanofiber webs respectively stacked at the upper and lower parts of the first support, and made of a plurality of nanofibers of which the diameters have a standard deviation of 300 nm or less; and a porous second support interposed between the first support and the nanofiber web. The filter medium is implemented by fibers having uniform diameters, and thus is easily manufactured to have a predetermined pore diameter and simultaneously has excellent uniformity of the pore diameters, thereby having excellent filtering efficiency and being more suitable when selectively separating specific objects. Backwashing is enabled at uniform pressure during backwashing such that high cleaning power is obtained. The filter medium has excellent water permeability and excellent mechanical strength so as to minimize the shape and structural deformation and damage of the filter medium.

    Separator for fuel cell, method of fabricating the same, and fuel cell electrode assembly
    9.
    发明授权
    Separator for fuel cell, method of fabricating the same, and fuel cell electrode assembly 有权

    公开(公告)号：US10916783B2

    公开(公告)日：2021-02-09

    申请号：US16861681

    申请日：2020-04-29

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： In Yong Seo

    IPC: H01M8/0239 ,  H01M8/1062 ,  H01M8/1086 ,  H01M8/106 ,  H01M8/0245 ,  H01M8/1018

    Abstract: Provided is a method of manufacturing a separator for a fuel cell comprising: accumulating fibers obtained by electrospinning a spinning solution in which a polymer and a solvent are mixed to obtain a first support having first pores in a three-dimensional network structure; electrospraying a spraying solution in which a first ion exchange resin and a solvent are mixed to spray droplets of the first ion exchange resin on the first support body; accumulating fibers obtained by electrospinning a spinning solution in which a polymer and a solvent are mixed on the first support to form a second support having second pores in a three-dimensional network structure; and electrospraying a spraying solution in which a second ion exchange resin and a solvent are mixed to spray droplets of the second ion exchange resin on the second support body and fill the second ion exchange resin in the second pores.

    Liquid drug-filtering filter medium and filter module
    10.
    发明授权
    Liquid drug-filtering filter medium and filter module 有权

    公开(公告)号：US10695486B2

    公开(公告)日：2020-06-30

    申请号：US15767887

    申请日：2016-10-14

    Applicant: AMOGREENTECH CO., LTD.

    Inventor： In Yong Seo ,  Ui Young Jeong

    IPC: A61M5/165 ,  A61M5/178 ,  A61M5/32 ,  A61M5/38 ,  A61M5/31

    Abstract: A liquid drug-filtering filter medium is provided, which can include a nanofiber web having a three-dimensional network structure for filtering foreign substances included in a liquid drug. According to the embodiment, the occurrence of differential pressure when drawing in and filtering a liquid drug is minimized, and thus the liquid drug may be quickly drawn into a syringe cylinder within a short time and by applying small force, and at the same time, the filtration rate of foreign substances in the liquid drug is very outstanding. A method for producing the liquid drug-filtering filter medium is also provided, which enables the very easy adjustment of a pore structure of the filter medium or the diameters of the pores in order to enable the pore structure to minimize the occurrence of differential pressure or change the differential pressure to a target level.

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