Hyeon Su
Hyeon Su Heo, Euijeongbu-Si KR
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20140128625 | METHOD OF PREPARING FURFURAL COMPOUNDS - Provided is a two-step method of producing a compound of chemical formula 1 in the presence of an alcohol solvent and a Group 3B metal catalyst or a salt thereof, comprising a first step comprising alkylation or isomerization of an aldohexose-containing substrate to obtain an intermediate, and a second step comprising dehydration of the intermediate to produce a compound of chemical formula 1. Preferably, additional solvent and/or catalyst are not added in the second step. | 05-08-2014 |
Hyeon Su Heo, Uijeongbu-Si KR
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20150232890 | METHOD OF PRODUCING UNSATURATED ACID FROM SALT OF HYDROXYCARBOXYLIC ACID - A method of producing an unsaturated acid from a salt of a hydroxycarboxylic acid, the method includes providing an aqueous solution including a salt of a hydroxycarboxylic acid; adding a solvent with a boiling point of 200° C. or higher to the aqueous solution; and heating the aqueous solution at a temperature lower than the boiling point of the solvent to split a salt from the salt of the hydroxycarboxylic acid while simultaneously dehydrating the hydroxycarboxylic acid, thereby converting the hydroxycarboxylic acid to the unsaturated acid. | 08-20-2015 |
Hyeon Su Jeon, Seoul KR
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20130283721 | STEEL FRAME STRUCTURE USING U-SHAPED COMPOSITE BEAM - A steel frame structure includes brackets connected to columns to allow the columns to be connected to a girder. Each bracket includes a U-shaped plate having a bottom plate, side plates extended upwardly perpendicularly from both ends of the bottom plate, and base plates extended outwardly from the side plates, a vertical plate welded perpendicularly to the center of the bottom plate of the U-shaped plate in such a manner as to be parallel to the side plates, and a horizontal plate welded to the top end of the vertical plate in such a manner as to be parallel to the bottom plate of the U-shaped plate. The girder has a generally U-shaped section. | 10-31-2013 |
Hyeon Su Jeong, Samcheok-Si KR
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20130162977 | METHOD FOR OPTICAL VISUALIZATION OF GRAPHENE DOMAINS - The present invention relates to a method for optical visualization of graphene domains, and more particularly to a method for optical visualization of graphene domains, which can optically visualize the domains and domain boundaries of graphene by forming on a substrate a graphene layer to be measured, forming a liquid crystal layer on the formed graphene layer, and then measuring the optical properties of the formed nematic liquid crystal layer. The method for optical visualization of graphene domains according to the invention uses a liquid crystal-coating method, which is simpler and easier than a conventional method for observing graphene domains. Thus, the method of the invention is simple, time-saving and inexpensive and, at the same time, enables very-large-area graphene domains to be observed with a polarizing microscope or the like. Therefore, the inventive method will be very useful in the research of graphene's properties. | 06-27-2013 |
Hyeon Su Kim, Seoul KR
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20130307793 | Touch Screen Panel - Disclosed is a touch screen panel including a plurality of separate sensing electrodes, and a plurality of separate driving electrodes. Each of the sensing electrodes includes a main electrode and a plurality of expanded parts. Each of the expanded parts includes a sub-electrode extending from the main electrode and at least one expanded electrode extending from the sub-electrode. Each of the driving electrodes surrounds at least part of a corresponding one of the expanded parts. | 11-21-2013 |
20140111707 | Touch Screen Panel - Disclosed is a touch screen panel including a plurality of separate sensing electrodes, and a plurality of separate driving electrodes. Each of the sensing electrodes includes a main electrode and a plurality of expanded parts. Each of the expanded parts includes a sub-electrode extending from the main electrode and at least one expanded electrode extending from the sub-electrode. Each of the driving electrodes surrounds at least part of a corresponding one of the expanded parts. | 04-24-2014 |
Hyeon Su Kim, Gyeonggi-Do KR
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20150199102 | DEVICE DRIVING SYSTEM THROUGH TOUCH INPUT IN LOW POWER MODE IN WHICH DISPLAY IS OFF - The present invention relates, in general, to a system and a method for quickly driving a device through a touch input in a low power mode in which a display of the device is off. More particularly, the present invention relates to a device driving system and a device driving method, which can minimize power consumption through only a predetermined touch input in a low power mode in which a display of a device is off, and quickly perform unlocking of the device, system control or execution of an application. | 07-16-2015 |
Hyeon Su Oh, Seoul KR
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20120174728 | METHOD FOR INCREASING RESONANCE OF INSTRUMENT AND THE INSTRUMENT - A method for increasing the resonance of an instrument such as a woodwind instrument having a cap holder inside and a pad coupled to the cap holder comprises: an agitation step for agitating a mixture of a conductive medium that contains at least one of platinum, gold, silver, copper, nickel, bronze, brass, phosphor bronze with solid silicon; a mixture heating step for heating the agitated mixture; a coagulation step for naturally cooling the heated mixture and coagulating into a solid; a mixture pulverization step for pulverizing the mixture; a mixture application step for applying the mixture to the inside of the cap holder; and a pad attaching step for attaching a pad to the interior of the cap holder after the mixture application step. | 07-12-2012 |