Patent application number | Description | Published |
20110017363 | HIGH STRENGTH THIN STEEL SHEET EXCELLING IN WELDABILITY AND PROCESS FOR PRODUCING THE SAME - Provided are a high strength thin steel sheet having tensile strength of about 800 MPa or more, and a manufacturing method thereof. The thin steel sheet is mainly used for construction materials, home appliances, and automobiles. The thin steel sheet has excellent plating characteristic, welding characteristic, bending workability, and hole expansion ratio. The thin steel sheet includes, in weight %, C: 0.02-0.20%, Si: 1.5% or less, Mn: 1.5-3.0%, P: 0.001-0.10%, S: 0.010% or less, SoLAl: 0.01-0.40%, N: 0.020% or less, Cr: 0.3-1.5%, B: 0.0010-0.0060%, Sb: 0.001-0.10%, and including at least one material selected from the group consisting of Ti: 0.003-0.08%, Nb: 0.003-0.08%, and Mo: 0.003-0.08%, and includes Fe and other inevitable impurities as a remainder. Here, Si, Mn, B, Sb, P, and S meet conditions of 5<(Si/Mn+150B)/Sb<20 and C+Mn/20+Si/30+2P+4S<0.27. Also, the manufacturing method can secure workability of the thin steel sheet. | 01-27-2011 |
20120267012 | ZINC-PLATED STEEL SHEET FOR HOT PRESSING HAVING OUTSTANDING SURFACE CHARACTERISTICS, HOT-PRESSED MOULDED PARTS OBTAINED USING THE SAME, AND A PRODUCTION METHOD FOR THE SAME - Provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a metal surface diffusion layer of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr; an aluminum-rich layer containing at least 30 wt. % of aluminium formed on the surface diffusion layer, and a zinc plating layer formed on the aluminum-rich layer. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment. Cracking in the steel foundation plate during hot press molding is prevented. | 10-25-2012 |
20150307977 | Zinc-Plated Steel Sheet for Hot Pressing Having Outstanding Surface Characteristics, Hot-Pressed Moulded Parts Obtained Using the Same, and a Production Method for the Same - Provided is a zinc-plated steel sheet for hot pressing having outstanding surface characteristics, comprising: a steel foundation plate comprising a metal surface diffusion layer of which the Gibbs free energy reduction per mole of oxygen during oxidation is less than that of Cr, an aluminium-rich layer containing at least 30 wt. % of aluminium formed on the surface diffusion layer, and a zinc plating layer formed on the aluminium-rich layer. In this way, a metal having a low affinity for oxygen is coated to an effective thickness prior to annealing and thus the creation of annealing oxides at the surface of the steel sheet is suppressed and a uniform zinc plating layer is formed, and alloying of the zinc plating layer is promoted during press-processing heat treatment. Cracking in the steel foundation plate during hot press molding is prevented. | 10-29-2015 |
Patent application number | Description | Published |
20090200368 | Method of Multi-Interfacing Between Smart Card and Memory Card, and Multi-Interface Card - A multi-interface card includes smart card interface, memory card interface, card controller and memory module. The smart card interface interfaces with a smart card host using a smart card protocol. The memory card interface interfaces with a memory card host using a memory card protocol. The card controller controls the smart card host and memory card host so that the smart card host and the memory card host simultaneously interface with the smart card and the memory card interfaces, respectively. The memory module stores data transferred from the smart card host and memory card host. The multi-interface card simultaneously supports the smart card interface and the memory card interface. Thus, the one multi-interface card can support a subscriber authentication function and a data storage function. | 08-13-2009 |
20100164294 | Power source switching apparatus and method thereof - A power source switching apparatus and method thereof are provided. The example power source switching apparatus may include a battery storing charges received from an external power source and outputting a voltage corresponding to the stored charges, a voltage adjuster outputting a first power source voltage having a voltage level, corresponding to the output voltage of the battery, during an external power source mode where the battery is being charged, the first power source voltage based at least in part on the external power source and the output voltage of the battery, a controller outputting a first control signal and a second control signal, the first control signal enabled if the battery is operating in the external power source mode and the second control signal is enabled if the battery is not operating in the external power source mode, a first switch outputting the first power source voltage if the first control signal is enabled and a second switch outputting the output voltage of the battery if the second control signal is enabled. In an example method, a first power source voltage may be provided if a battery is not being charged by an external power source voltage, the first power source voltage output by the battery. A second power source voltage may be provided if the battery is being charged by the external power source voltage, the second power source voltage corresponding to a voltage level of the first power source voltage and not provided from the battery. | 07-01-2010 |
20150063007 | STATIC RANDOM ACCESS MEMORY DEVICE INCLUDING DUAL POWER LINE AND BIT LINE PRECHARGE METHOD THEREOF - A static random access memory (SRAM) device is provided. A memory cell is supplied with a first driving voltage. A bit line pair is connected to the memory cell. A sense amplifier is connected to the bit line pair. The sense amplifier is supplied with a second driving voltage that is lower than the first driving voltage. A control logic selects a pre-charge voltage from the first and second driving voltages, pre-charges the bit line pair to the pre-charge voltage and adjusts the pre-charged voltage to a target voltage. | 03-05-2015 |
Patent application number | Description | Published |
20130177780 | Hot Dip Plated Steel Sheet Having Excellent Plating Adhesiveness and Method of Manufacturing the Same - Provided is a hot dip plated steel sheet used in automotive materials and a method of manufacturing the same, and more particularly, to a hot dip plated steel sheet having excellent platability and plating adhesiveness in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and a method of manufacturing the same. According to the present invention, a hot dip plated steel sheet having excellent platability and plating adhesiveness is provided, in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and thus, limitations in added amounts of silicon (Si), manganese (Mn), or aluminum (Al) may be mitigated. Therefore, development of new steels may be accelerated. | 07-11-2013 |
20130209832 | Metal-Coated Steel Sheet, Galvannealed Steel Sheet, and Method for Manufacturing Same - Provided is a metal coated steel sheet having a coating layer including a metal having a level of Gibbs free energy equal to that of Fe or above and an oxide thereof. Accordingly, the quality of a plated steel sheet may be improved by preventing the generation of bare spots through inhibition of the formation of Mn oxide, Si oxide, or Al oxide on the surface thereof, and simultaneously, the complexity of a manufacturing facility or an increase in manufacturing costs may be minimized. Economic benefits are thus realized. | 08-15-2013 |
20130330539 | Nanoplatelet-Type Zirconium Phosphate and Method for Preparing Same - A platelet-type zirconium phosphate, which has a P—OH group contained in a structure thereof, and has a crystalline peak at a 2θ value of 11.6±2 degrees and no crystalline peak at a 2θ value of less than 11.6±2 degrees in X-ray diffraction analysis, is provided. The platelet-type zirconium phosphate has a platelet-type structure and can be uniformly dispersed at a nanoscale level in a coating film to exhibit excellent surface gloss and barrier capability. Also, the platelet-type zirconium phosphate can exhibit excellent corrosion resistance due to the presence of the P—OH group on a surface thereof, and can be dispersed not only in an aqueous solution but also in an organic solvent. | 12-12-2013 |
20140124028 | SOLAR CELL SUBSTRATE, METHOD FOR MANUFACTURING SAME, AND SOLAR CELL USING SAME - One aspect of the present invention is a solar cell substrate, comprising: a lower substrate; and a lower electrode that is formed on the upper part of said lower substrate, wherein a metal diffusion-preventing film having at least one or two or more metal layers is included between said lower substrate and said lower electrode, and if two or more metal layers are formed, the metal layers adjoining each other can be different metals. Additionally, a solar cell, which is another aspect of the present invention, comprises: a lower substrate; and a lower electrode that is formed on the upper part of said lower substrate, wherein a metal diffusion-preventing film having at least one or two or more metal layers is included between said lower substrate and said lower electrode, and if two or more metal layers are formed, the metal layers adjoining each other comprise solar cell substrates which are of different metals; p-type light absorption layers formed on said solar cell substrates; n-type buffer layers formed on said light absorption layers; transparent windows formed on said buffer layers; and upper electrodes formed on said transparent windows. | 05-08-2014 |
20140130859 | SOLAR CELL SUBSTRATE AND SOLAR CELL USING SAME - The present invention relates to a solar cell substrate, and to a solar cell using same. The solar cell according to one embodiment of the present invention comprises: a lower substrate; and a lower electrode formed on the lower substrate. The lower electrode is formed of a Mo—X—Na three-component-system compound metal layer. Here, X may be one of Nb, Ni, Si, Ti, W, and Cr. The solar cell according to another embodiment of the present invention may comprise: a solar cell substrate including a lower substrate and a Mo—X—Na three-component-system compound metal layer that is a lower electrode formed on the lower substrate; a light-absorption layer formed on the solar cell substrate; a buffer layer formed on the light-absorption layer; a transparent window formed on the buffer layer; and an upper electrode formed on the transparent window. | 05-15-2014 |
20140147645 | Resin Composition for a Surface Treatment, and Steel Sheet Coated with Same - Provided are a resin composition for surface treatment and a surface-treated steel sheet coated therewith. The resin composition for surface treatment includes a dispersing element having excellent thermal conductivity and heat dissipation, thereby maintaining physical properties of the conventional anti-fingerprint steel sheet, for example, high whiteness, fingerprint resistance, workability, electric conductivity and alkali resistance, and providing heat dissipation. In addition, the surface-treated steel sheet coated with the resin composition for surface treatment of the present invention has physical properties such as high heat dissipation, electric conductivity and whiteness, and thus may be replaced with a bottom chassis of a backlight unit, particularly, an edge-type backlight unit. | 05-29-2014 |
20140150930 | HOT PRESS FORMING STEEL PLATE, FORMED MEMBER USING SAME, AND METHOD FOR MANUFACTURING THE PLATE AND MEMBER - The present invention relates to a hot press forming steel plate made of a composition comprising: 0.3-1.0 wt % of C; 0.0-4.0 wt % of Mn; 1.0-2.0 wt % of Si; 0.01-2.0 wt % of Al; 0.015 wt % or less of S; 0.01 wt % or less of N; and the remainder being Fe and unavoidable impurities. Further, the present. invention relates to a method for manufacturing the hot press forming steel plate, characterized by comprising the steps of: heating, to between 1100 and 1300° C., a steel slab having the composition; performing hot rolling finishing between. an Ar3 transformation point and 950° C.; and performing winding between MS and 720° C. Further, the present invention. relates to a hot press formed member characterized by having the composition, and having a dual phase microstructure made of bainite and residual austenite. In addition, the present invention relates to a method for manufacturing the hot press formed member, characterized by comprising the steps of: heating the steel plate having the composition to a temperature of an Ac3 point or higher; hot press molding the heated steel plate; performing cooling at a cooling speed of 20° C./sec or higher to a temperature between MS and 350° C.; and performing a heat treatment in a heating furnace between MS and 550° C. | 06-05-2014 |
20140302311 | Coated Steel Sheet Having Superior Welding, Scratch-Resistance, and Corrosion-Resistance Properties - Provided is a resin composition for an under coat of an UV coating layer and a coated steel sheet using the resin composition. The coated steel sheet comprises a material steel sheet; an under coat layer including a cured product of a resin composition for the under coat layer which contains a main resin and a metal powder, the under coat layer being formed on one side or both sides of the material steel sheet; and a top coat layer formed on the under coat layer and containing a radical compound, thereby providing a superior appearance, scratch resistance, corrosion resistance and superior weldability. | 10-09-2014 |
20140363697 | HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT PLATING SURFACE QUALITY AND ADHESION, AND METHOD OF MANUFACTURING THE SAME - Provided is a method of manufacturing a hot-dip galvanized steel sheet. According to an aspect of the present invention, the method may include preparing a base steel sheet, forming a iron (Fe)-plated layer on the prepared base steel sheet, oxidation heating the steel sheet having the Fe-plated layer formed thereon at a temperature ranging from 600° C. to 800° C., maintaining the heated steel sheet at a temperature ranging from 750° C. to 900° C. for 5 seconds or more in a reducing atmosphere with a dew point of between −30° C. to 5° C. including 20 ppm or less of oxygen, 1 vol % to 20 vol % of H2, and N2 as well as unavoidable gases as a remainder, cooling the maintained steel sheet, and plating the cooled steel sheet by dipping in a hot-dip galvanizing bath. | 12-11-2014 |
20150218705 | CONVERSION COATING COMPOSITION, SURFACE TREATED STEEL SHEET, AND METHOD FOR MANUFACTURING THE SAME - A conversion coating composition comprising 0.01 wt % to 0.2 wt % of phosphorous (P); 0.01 wt % to 0.2 wt % of magnesium (Mg); 0.005 wt % to 0.15 wt % of zirconium (Zr); 0.005 wt % to 0.15 wt % of titanium (Ti); 0.005 wt % to 0.15 wt % of vanadium (V); 0.05 wt % to 1 wt % of phenol resin; the balance of water and other unavoidable impurities is provided. A surface treated steel sheet comprising a base steel sheet; a zinc or zinc alloy plated layer formed on the base steel sheet; a blackening layer formed on the zinc or zinc alloy plated layer; and an organic and inorganic complex conversion coating layer formed on the blackening layer, wherein the organic and inorganic complex conversion coating layer may satisfy the weight ratio of P:Mg:Zr:Ti:V=1:0.045 to 2:0.035 to 1.5:0.035 to 1.3:0.035 to 1.5 (based on the weight of P) is also provided. A method for manufacturing a steel sheet treated with the conversion coating composition is also provided. | 08-06-2015 |
20150299472 | Organic-Inorganic Hybrid Coating Solution Composition and Organic-Inorganic Hybrid Coated Steel Sheet - Provided are an organic-inorganic hybrid coating solution composition including 12 wt % to 36 wt % of a urethane-acryl hybrid resin, 8 wt % to 24 wt % of a nanosilicate-phenoxy hybrid resin, and 40 wt % to 80 wt % of an inorganic-based anti-corrosion agent based on a solid content, and an organic-inorganic hybrid coated steel sheet having a coating layer formed with the coating solution composition. A coating solution composition having excellent solution stability and a coated steel sheet having improved corrosion resistance, solvent resistance, and conductivity may be provided. | 10-22-2015 |
Patent application number | Description | Published |
20100096762 | Synthesis Method Of Metal Cyclopentadienide In Bulk - The present invention relates to a synthesis method of metal cyclopentadienide by direct reaction of dicyclopentadiene with a group 1 metal in the presence of an aprotic solvent. Unlike the conventional method depending on retro Diels-Alder reaction of dicyclopentadiene to generate indirectly cyclopentadiene, the method of the present invention favors generation of cyclopentadiene and metal cyclopentadienide as well by adding dicyclopentadiene directly when the reaction temperature reaches in the boiling point of a reaction solvent. | 04-22-2010 |
20120123078 | METALLOCENE COMPOUND, CATALYST COMPOSITION COMPRISING THE SAME, AND AN OLEFINIC POLYMER PRODUCED USING THE SAME - The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer. | 05-17-2012 |
20140066288 | METALLOCENE COMPOUND, CATALYST COMPOSITION COMPRISING THE SAME, AND AN OLEFINIC POLYMER PRODUCED USING THE SAME - The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer. | 03-06-2014 |
20140094574 | POLYOLEFIN AND PREPARATION METHOD THEREOF - A polyolefin has 1) a density in the range of 0.93 to 0.97 g/cm | 04-03-2014 |