Ki Ju
Ki Ju Im, Namyangju-Si KR
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20150230290 | PORTABLE AUXILIARY HEATING DEVICE - A portable auxiliary heating device according to the present invention comprises: a base substrate; electrodes formed on both end portions of a top surface of the base substrate; an external power connection part connected to electrode lines which are connected to the electrodes; a heating layer stacked on the base substrate and generating heat by external power applied through the electrodes; and an insulation layer stacked on the heating layer, wherein the heating layer is made from a metallic oxide material. | 08-13-2015 |
Ki Ju Jeon, Chungcheongnam-Do KR
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20140061448 | MULTI-CHANNEL LUMINOUS ENERGY SENSING UNIT, APPARATUS FOR MEASURING LIGHT ENERGY OF EXPOSURE DEVICE AND METHOD FOR MEASURING LIGHT ENERGY BY CHANNEL - The present invention relates to a multi-channel luminous energy sensing unit, an apparatus for measuring light energy of an exposure device and a method for measuring light energy by channel. In accordance with one embodiment of the present invention, a multi-channel luminous energy sensing unit to sense an amount of light illuminated from a light source, which includes a board; and a plurality of light sensor modules arranged on the board for sensing at least two channel light with bandwidths different from each other among the light illuminated from the light source, is provided. And also, an apparatus for measuring light energy of an exposure device including the same and a method for measuring light energy by channel are provided. | 03-06-2014 |
Ki Ju Kang, Damyang-Gun KR
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20130276308 | METHOD FOR MANUFACTURING SANDWICH PANEL HAVING CORE OF TRUSS STRUCTURE - Provided is a method for manufacturing a panel including a core having a truss structure between upper and lower face sheets. The manufacturing method includes disposing the upper and lower face sheets in parallel to each other at a predetermined distance, repeatedly performing, several times, a process in which a plurality of flexible wires vertically pass through the upper and lower face sheets to reciprocation-connect the upper and lower face sheets to each other, thereby sewing the upper and lower face sheets after the upper and lower face sheets horizontally move in parallel to each other, and maximally spacing both face sheets in a vertical direction while being maintained in a parallel to each other after a relative displacement of the upper and lower face sheets is solved, and fixing the face sheets and the wires to each other. | 10-24-2013 |
Ki Ju Kang, Damyang-Gun, Jeollanam-Do KR
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20150306794 | METHOD FOR FABRICATING ULTRA-LOW DENSITY THREE-DIMENSIONAL THIN FILM STRUCTURE BASED ON PHOTO-LITHOGRAPHY - A method for forming an ultra-low density three-dimensional thin film structure made of a solid thin film, including: radiating ultraviolet rays of different patterns in respective predetermined directions to a liquid photosensitive resin bulk so as to harden a portion of the resin bulk; removing the liquid photosensitive resin which is not hardened so as to form a solid photosensitive resin structure; coating the surface of the solid photosensitive resin structure with a thin film; removing the thin film from the outermost surface of the resin bulk so as to expose the solid photosensitive resin; and removing the solid photosensitive resin structure. | 10-29-2015 |
Ki Ju Kang, Chonnam KR
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20100071300 | THREE-DIMENSIONAL CELLULAR LIGHT STRUCTURES WEAVING BY HELICAL WIRES AND THE MANUFACTURING METHOD OF THE SAME - Disclosed herein is a three-dimensional cellular light structure formed of continuous wire groups. In the cellular light structure, six orientational helical wire groups are intercrossed each other at 60 degrees or 120 degrees of angles in a three-dimensional space to thereby form a uniform pattern and having a good mechanical property such as strength, rigidity or the like. A method of mass-producing the structure in a cost-effective manner is also disclosed. The three-dimensional cellular light structure has a similar form to the Kagome truss. According to the manufacturing method of the three-dimensional cellular light structure of the present invention, a frame assembly consisting of rectangular frames and connection support bars is used, when the 1st, 2nd, 3rd, 4th, 5th and 6th-axis helical wires are assembled. In addition, the manufacturing method is characterized by comprising a step of arranging and fixing the 1st, 2nd and 3rd-axis wires on the frames to form a plurality of two-dimensional Kagome planes, a step of connecting the frames by means of connection support bars, and a step of assembling the 4th, 5th and 6th-axis wires to fabricate a three-dimensional cellular light structure. When required, the intersection points of the wires are bonded by means of welding, brazing, soldering, or a liquid-or-spray-form adhesive to provide a structural material having a light weight and a good mechanical strength and rigidity, it can be made into a fiber-reinforced composite material by filling part of or entire internal empty space of the structure. | 03-25-2010 |
20130284858 | THREE-DIMENSIONAL CELLULAR LIGHT STRUCTURES WEAVING BY HELICAL WIRES AND THE MANUFACTURING METHOD OF THE SAME - A three-dimensional cellular light structure formed of continuous wire groups. For example, six orientational helical wire groups are intercrossed in a three-dimensional space and form a uniform pattern. In a manufacturing method, a frame assembly of rectangular frames and connection support bars is used. The method includes arranging and fixing first axis wires on the frames, connecting the frames by connection support bars, and assembling second axis wires to make a three-dimensional cellular light structure. The intersection points of the wires may be bonded. It can be a fiber-reinforced composite material by filling at least part of an internal empty space of the structure. | 10-31-2013 |
Ki Ju Kang, Jeollanam-Do KR
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20110051882 | TRUSS-REINFORCED SPACER GRID AND METHOD OF MANUFACTURING THE SAME - A truss-reinforced spacer grid and a method of manufacturing the same are provided, in which truss members having a small diameter are woven to form a truss structure surrounded by an external plate, and the truss structure is joined to the external plate to thereby improve the strength of the mechanical structure. The truss-reinforced spacer grid includes a truss structure in which horizontal trusses formed by horizontally weaving a plurality of truss members are vertically disposed at regular intervals, and an external plate is joined with ends of the horizontal trusses and surrounds the truss structure. | 03-03-2011 |
20110117315 | TRUSS TYPE PERIODIC CELLULAR MATERIALS HAVING INTERNAL CELLS, SOME OF WHICH ARE FILLED WITH SOLID MATERIALS - Provided are three-dimensional truss type periodic cellular materials, wherein a plurality of internal cells are formed periodically and part of the internal cells are filled with solid material like as metal, ceramic, synthetic resin, or composite materials for the purpose of preventing buckling of the truss elements when external compressive or shear loads is applied to the truss structure. By filling only parts of internal cells provided in the truss with appropriate solid materials, the buckling of truss elements can be suppressed maximally and effectively, and even if the buckling accidentally occurs, the sharp decline of strength can be prevented so as to ensure sufficient structural stability of the truss type periodic cellular materials. | 05-19-2011 |
20120151868 | 3-DIMENSIONAL LATTICE TRUSS STRUCTURE COMPOSED OF HELICAL WIRES AND METHOD FOR MANUFACTURING THE SAME - Disclosed are three-dimensional porous light-weight structures composed of helical wires and the manufacturing method of the same. Continuous helical wire groups in three or six directions having a designated angle (for example, 60 degrees or 90 degrees) with respect to one another in a space cross and are then assembled, and thus new truss-shaped three-dimensional lattice truss structures having high strength and stiffness to weight ratio and a large surface area and method of mass-producing the structures at low costs are provided. The three-dimensional porous light-weight structures are manufactured by a method in which helical wires are three-dimensionally assembled through a continuous process rather than a method in which net-shaped wires are simply woven and stacked, and thus have a configuration similar to the ideal hexahedron truss, Octet truss, or truss in which regular octahedrons and cuboctahedrons are combined, thereby having excellent mechanical properties or thermal or aerodynamic properties. | 06-21-2012 |
Ki Ju Lee, Seoul KR
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20080308189 | LEAD FREE SOLDER CONTAINING Sn, Ag AND Bi - A lead free solder is provided. The lead free solder includes about 1.5 wt % to about 2.5 wt % silver (Ag), about 3 wt % to about 6 wt % bismuth (Bi), about 0.005 wt % to about 0.1 wt % of a deoxidizing agent, and a balance of tin (Sn). The lead free solder has improved wettability, a lowered melting point, little or substantially no formation of oxidation layer in a solder bath, suppressed brittleness, improved thermal shock resistance and drop resistance. | 12-18-2008 |
Ki Ju Lee, Gyunggi-Do KR
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20140034707 | SOLDER INJECTION HEAD - Disclosed herein a solder injection head including: a bump material storing part having a bump material stored therein; a discharging part having one side connected to the bump material storing part and discharging the bump material to the outside; a heating part formed at at least one side of the discharging part and heating the bump material passing through the discharging part; and a press-fitting part press-fitting the bump material discharged to the outside and injecting the bump material onto a substrate. | 02-06-2014 |