In-Shik
In-Shik Kang, Gyeonggi-Do KR
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20150043529 | APPARATUS AND METHOD FOR USING MEMORY DEVICE - An apparatus and a method for providing a packet service (PS) or a Circtui service (CS) in an electronic device. The apparatus determines a number of “ping-pongs” in which an access change between a first modem and a second modem is repeatedly made for a predetermined first time, compares the number of ping-pongs with a predetermined reference number of ping-pongs, and provides the PS through the second modem for a predetermined second time when the determined number of ping-pongs is equal to or greater than the predetermined reference number of ping-pongs. | 02-12-2015 |
In-Shik Park, Yongin-Si KR
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20110140833 | REMOTE CONTROL APPARATUS AND METHOD THEREOF - Provided are an apparatus, system and method thereof for a remote control including a radio frequency (RF) antenna operable to transmit an RF signal to a first device; an infrared (IR) transmitter operable to transmit an IR signal to a second device; a user input unit operable to receive an input command from a user; a controller which determines if the input command is received, and if the input command is received, the controller controls the RF antenna to transmit the RF signal to the first device and the controller controls the IR transmitter to transmit the IR signal to the second device. | 06-16-2011 |
In-Shik Suh, Kyungsangbook-Do KR
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20140356220 | WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND DUCTILITY, AND METHOD FOR PRODUCING SAME - There are provided a wear resistant austenitic steel having superior machinability and toughness in weld heat affected zones and a method for producing the austenitic steel. The austenitic steel includes, by weight %, manganese (Mn): 15% to 25%, carbon (C): 0.8% to 1.8%, copper (Cu) satisfying 0.7C-0.56(%)≦Cu≦5%, and the balance of iron (Fe) and inevitable impurities, wherein the weld heat affected zones have a Charpy impact value of 100 J or greater at −40° C. The toughness of the austenitic steel is not decreased in weld heat affected zones because the formation of carbides during welding is suppressed, and the machinability of the austenitic steel is improved so that a cutting process may be easily performed on the austenitic steel. The corrosion resistance of the austenitic steel is improved so that the austenitic steel may be used for an extended period of time in corrosive environments. | 12-04-2014 |
20140373588 | WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND TOUGHNESS IN WELD HEAT AFFECTED ZONES THEREOF AND METHOD FOR PRODUCING SAME - There are provided a wear resistant austenitic steel having superior machinability and toughness in weld heat affected zones and a method for producing the austenitic steel. The austenitic steel includes, by weight %, manganese (Mn): 15% to 25%, carbon (C): 0.8% to 1.8%, copper (Cu) satisfying 0.7C-0.56(%)≦Cu≦5%, and the balance of iron (Fe) and inevitable impurities, wherein the weld heat affected zones have a Charpy impact value of 100 J or greater at −40° C. The toughness of the austenitic steel is not decreased in weld heat affected zones because the formation of carbides during welding is suppressed, and the machinability of the austenitic steel is improved so that a cutting process may be easily performed on the austenitic steel. The corrosion resistance of the austenitic steel is improved so that the austenitic steel may be used for an extended period of time in corrosive environments. | 12-25-2014 |
In-Shik Suh, Pohang-Si, Kyungsangbook-Do KR
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20150354037 | HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR - The present invention relates to a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone and a preparation method therefor. One embodiment of the present invention provides: a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone, comprising 0.8-1.5 wt % of C, 15-22 wt % of Mn, 5 wt % or less of Cr (except 0), and the balance of Fe and other inevitable impurities, and further comprising at least one of the following (a) and (b), wherein the microstructure of a welding heat-affected zone comprises 90% or more of austenite by volume fraction; and a preparation method therefor. (a) Mo: 0.1-1% and B: 0.001-0.02% (b) Ti: 0.01-0.3% and N: 0.003-0.1% | 12-10-2015 |