Il-Won
Il-Won Choi, Seoul KR
Patent application number | Description | Published |
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20090128010 | Green Electroluminescent Compounds and Organic Electroluminescent Device Using the Same - The present invention relates to organic electroluminescent compounds represented by Chemical Formula 1 or 2, a process for preparing the same, and an organic light emitting diode (OLED) which comprises, as a luminescent region interposed between an anode and a cathode, at least one compound (s) selected from those represented by Chemical Formula 1 or 2, and at least one compound selected from anthracene derivatives, benz[a]anthracene derivatives and naphthacene derivatives. The electroluminescent compound according to the present invention is a green electroluminescent compound having maximized electroluminescent efficiency and lifetime of device. | 05-21-2009 |
20110054229 | LUMINESCENT COMPOUNDS AND ELECTROLUMINESCENT DEVICE USING THE SAME - The present invention relates to organic electroluminescent compounds and organic electroluminescent devices employing the same. More specifically, the invention relates to organic electroluminescent compounds containing an anthracenyl group or an aryl group having an anthracenyl substituent m the aryl ring of fluorene or indenofluorene, as a blue electroluminescent material in an organic electroluminescent layer. The electroluminescent compounds according to the invention exhibit high luminous efficiency and excellent life property, so that an OLED device having very good operation lifetime can be prepared therefrom. | 03-03-2011 |
Il-Won Jung, Bucheon-Si KR
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20120263401 | POLYETHYLENE TEREPHTHALATE FIBER FOR AIR-BAGS AND TEXTILES MADE FROM SAME - A polyethylene terephthalate multifilament prepared by spinning polyethylene terephthalate chips having an intrinsic viscosity of 0.8 to 1.3 is provided. In order to improve the energy absorption capability of a textile for polyethylene terephthalate air bags, a textile for air bag having an improved rupture property at a welt portion in an air bag cushion deployment test can be prepared using a polyethylene terephthalate fiber by adjusting a strength/deformation curve of the polyethylene terephthalate fiber. Here, the polyethylene terephthalate fiber has a strength/deformation curve in which the polyethylene terephthalate fiber extends by less than 4% when subjected to an initial stress of 1.0 g/d at room temperature, extends by less than 12% subjected to a medium stress of 4.5 g/d and extends by 3% or more until fibers are cut at a tensile strength of at least 7.0 g/d, and has an elongation at break of 15% or more, a carboxyl end group (CEG) content of 35 mmol/kg or less, and a single fiber thickness of 5 deniers or less. | 10-18-2012 |
20130089725 | FABRIC FOR AIR-BAG, USING POLYETHYLENE TEREPHTHALATE WITH EXCELLENT HEAT RESISTANCE - Provided is a fabric for an airbag using a polyethylene terephthalate fiber, and particularly, to a fabric for an airbag having enhanced thermal resistance and instantaneous thermal strain rate, which is manufactured using a polyethylene terephthalate fiber for an airbag manufactured by controlling the strength and elongation of the polyethylene terephthalate fiber to replace a conventional fabric for an airbag using a yarn formed of nylon 66. The fabric for an airbag including a polyethylene terephthalate fiber manufactured by spinning a polyethylene terephthalate chip having an intrinsic viscosity of 0.8 to 1.3 dl/g has thermal resistances of 0.45 to 0.65 seconds at 450° C., and 0.75 to 1.0 seconds at 350° C. | 04-11-2013 |
Il-Won Kwon, Seoul KR
Patent application number | Description | Published |
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20140309812 | METHOD AND APPARATUS FOR SUPPORTING DRIVING USING WIRELESS COMMUNICATION NETWORK AND SYSTEM THEREOF - A method of allowing a local Driving Assistance Service (DAS) center within a base station to provide a DAS to a vehicle by using a communication network is provided. The method includes receiving, from a vehicle terminal, local DAS information and surrounding information of the vehicle, generating Analyzed-local (A-local) DAS information by using the received local DAS information, and transmitting, when the DAS is provided by using the generated A-local DAS information, the A-local DAS information to the vehicle terminal. | 10-16-2014 |
Il-Won Seo, Seoul KR
Patent application number | Description | Published |
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20090150088 | METHOD OF ANALYZING BEHAVIOR OF POLLUTANTS THROUGH PREDICTION OF TRANSVERSE DISPERSION COEFFICIENT USING BASIC HYDRAULIC DATA IN STREAM - Disclosed herein is a method of analyzing the behavior of pollutants in a stream through the prediction of a transverse dispersion coefficient. The method includes the steps of (a) surveying and storing stream data, including the flow velocity, depth, sinuosity, width and longitudinal dispersion coefficient of a target stream; (b) deriving a transverse dispersion coefficient by arranging only dimensionless factors that influence transverse mixing through dimensional analysis, and assuming that the transverse dispersion coefficient is a product of power functions; (c) collecting hydraulic data and transverse dispersion coefficient data of domestic and foreign streams; (d) deriving the predicted value of the transverse dispersion coefficient from the transverse dispersion coefficient through regression analysis; (e) obtaining a numerical solution by constructing a numerical model using the flow velocity, depth, sinuosity, width and longitudinal dispersion coefficient of the stream and the transverse dispersion coefficient. | 06-11-2009 |