Filter medium, manufacturing method therefor, and filter unit comprising same

    公开(公告)号:US11364470B2

    公开(公告)日:2022-06-21

    申请号:US16632630

    申请日:2018-07-23

    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.

    METHOD FOR MANUFACTURING HEAT DISSIPATION SHEET

    公开(公告)号:US20220095486A1

    公开(公告)日:2022-03-24

    申请号:US17419888

    申请日:2020-01-03

    Abstract: A method of manufacturing a heat dissipation sheet including preparing a preliminary sheet including a matrix-forming component, a crosslinking agent, and a heat dissipation filler, and crosslinking the matrix-forming component included in the preliminary sheet and thus obtaining a heat dissipation sheet. The heat dissipation sheet manufactured has remarkably excellent heat dissipation properties because it contains a high content of heat dissipation filler. Due to the material properties of the matrix-forming component and the crosslinking of the matrix-forming component and the resulting matrix formation, the occurrence of cracking, shrinkage, pore formation, thickness change, and the like is minimized or prevented, and excellent flexibility can be attained. Moreover, since processability is improved through processes such as cooling when manufacturing the heat dissipation sheet, productivity is excellent, and the sheet can be suitable for mass production.

    WATERPROOF SOUND-TRANSMITTING SHEET FOR FACILITATING VISION INSPECTION

    公开(公告)号:US20220088902A1

    公开(公告)日:2022-03-24

    申请号:US17295825

    申请日:2019-11-22

    Inventor: Inyong SEO

    Abstract: Disclosed is a waterproof sound-transmitting sheet for facilitating a visual inspection, which radiates a polymer material in a state of blending a pigment to form a waterproof layer having an achromatic color, thereby facilitating a vision inspection, and improving a water repellence even while making the waterproof sound-transmitting sheet thin and light. The disclosed waterproof sound-transmitting sheet for facilitating the visual inspection includes an acoustic layer interposed between an upper waterproof layer and a lower waterproof layer, and at least one of the upper waterproof layer and the lower waterproof layer is composed of a porous colored membrane having a color.

    HEATING ELEMENT HAVING FUSE FUNCTION AND HEATER UNIT COMPRISING SAME

    公开(公告)号:US20220086957A1

    公开(公告)日:2022-03-17

    申请号:US17424578

    申请日:2020-01-30

    Abstract: Provided is a heating element having a fuse function. The heating element having a fuse function according to an exemplary embodiment of the present invention includes a plurality of heat sources which generate heat when power is applied, a fuse member of which both end portions are physically connected to two heat sources disposed to be spaced apart from each other by a gap to connect the two heat sources in series and which is fused to electrically disconnect the two heat sources when a temperature is higher than or equal to a preset temperature, and an insulating member which surrounds the plurality of heat sources and the fuse member.

    CELL CULTURE SHEET ASSEMBLY FOR LARGE-CAPACITY INCUBATOR, AND LARGE-CAPACITY INCUBATOR COMPRISING SAME

    公开(公告)号:US20220002651A1

    公开(公告)日:2022-01-06

    申请号:US17293993

    申请日:2019-11-14

    Abstract: Provided is a cell culture sheet for a large-capacity incubator. A cell culture sheet according to one embodiment of the present invention is a cell culture sheet provided in a large-capacity incubator having a plurality of sheets disposed to be spaced apart at predetermined intervals therein, wherein the cell culture sheet has an area of 100 cm2 or more and a bending depth of 0.5 cm or less. As such, even when the culture sheets are closely placed in a limited volume of space, there is little sagging or shape deformation in a specific direction to prevent the occurrence of contact with adjacent culture sheets, thereby preventing a decrease in cell culture volume due to a dead space. Furthermore, since the flow of a cell culture fluid due to the occurrence of contact can be minimized or prevented, a large capacity of cells can be stably and smoothly cultivated such that the cell culture sheet is very suitable for a large-capacity incubator and can be widely applied to the cell culture industry.

    AIR PERMEABLE CAP FOR VEHICLE
    97.
    发明申请

    公开(公告)号:US20210302005A1

    公开(公告)日:2021-09-30

    申请号:US17214726

    申请日:2021-03-26

    Abstract: An air permeable cap for a vehicle may include: a cover part formed in a cylindrical shape with a closed end part, and having a plurality of guide ribs radially formed on an inner circumferential surface thereof; a foam part inserted and installed in the cover part so as to be contacted with the guide ribs, and having a ventilation hole formed on one side thereof; a membrane part installed between the foam part and the cover part, and configured to block a flow of water through the ventilation hole and allow a flow of air through the ventilation hole; and an adhesion retention part coupled in a concave-convex shape to retain an adhesion force between the foam part and the cover part.

    BREATHABLE WATERPROOF SHEET
    98.
    发明申请

    公开(公告)号:US20210255051A1

    公开(公告)日:2021-08-19

    申请号:US17179553

    申请日:2021-02-19

    Inventor: In-Yong SEO

    Abstract: A breathable waterproof sheet, which interposes a support layer having a plurality of holes formed therein, thus preventing a waterproof air-permeable layer from colliding with a pressure sensor by a water pressure. The breathable waterproof sheet includes a waterproof air-permeable layer formed of a film having elasticity, an adhesive layer having one surface adhered to one surface of the waterproof air-permeable layer, and a support layer having a plurality of air-permeable holes formed therein and having one surface adhered to the other surface of the adhesive layer.

    Method for manufacturing flexible printed circuit board and flexible printed circuit board manufactured by same

    公开(公告)号:US11006531B1

    公开(公告)日:2021-05-11

    申请号:US16618067

    申请日:2018-05-16

    Inventor: Sung-Baek Dan

    Abstract: A method for manufacturing a flexible printed circuit board in which base sheets composed of Teflon film having heat resistance and low dielectric constant are stacked to prevent loss of a high frequency signal while minimizing dielectric loss due to the high frequency signal and a flexible printed circuit board manufactured by the same are disclosed. The proposed method for manufacturing a flexible printed circuit board comprises a step of preparing a base sheet which is a Teflon film having a thin film pattern formed on one surface thereof, a step of preparing an adhesive sheet, a step of stacking a plurality of base sheets and adhesive sheets, and a step of heating, pressing, and adhering a stacked body in which the plurality of base sheets and adhesive sheets are stacked.

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