Patents Assigned to Posco
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Publication number: 20140306242Abstract: An optical semiconductor lighting apparatus including: a substrate in which a single LED chip or a plurality of LED chips are disposed; a first mold portion disposed on the substrate to cover the plurality of LED chips; and a second mold portion extending from an edge of the first mold portion and disposed on the substrate. The respective LED chips can improve adhesive strength with respect to the substrate through the first and second mold portions. Peeling, surface cracking and damage caused by moisture permeation can be prevented by the first and second mold portions. A fluorescent material included in the second mold portion can improve a wavelength conversion rate.Type: ApplicationFiled: May 28, 2013Publication date: October 16, 2014Applicant: POSCO LED COMPANY LTD.Inventors: Kyung-Rye Kim, Ji Eun Kook, Jung Hwa Kim, Jing Jong Kim, Min Uk Yoo, Dae Won Kim, Seong Bok Yoon
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Patent number: 8841690Abstract: An optical semiconductor lighting apparatus includes a light emitting module including a semiconductor optical device, a housing to house the light emitting module, a first sealing body connected to a groove recessed in a polygonal or closed-curve shape of the housing, a first optical cover covering an outer edge of the groove and a top surface of the housing, a first rib formed on a top surface of the first sealing body along a forming direction of the first sealing body, and a pair of second ribs formed in parallel along both edges of a bottom surface of the first sealing body.Type: GrantFiled: June 18, 2013Date of Patent: September 23, 2014Assignee: Posco LED Company Ltd.Inventors: Ji Wan Kim, Yun Ha Kim, Jung Hwa Kim
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Publication number: 20140247598Abstract: A light emitting diode (LED) illuminating apparatus including a heat sink, a light emitting module, a power connection portion, a translucent cover and a wiring path. The heat sink has a plurality of heat dissipation fins. The light emitting module is positioned on an upper portion of the heat sink. The power connection portion is positioned below a lower portion of the heat sink. The translucent cover is mounted to cover an upper portion of the light emitting module. The wiring path is formed in the heat sink so as to accommodate a wire for electrically connecting the power connection portion and the light emitting module. In the LED illuminating apparatus, the light emitting module emits light by directly receiving AC power supplied through the wire accommodated in the wiring path.Type: ApplicationFiled: May 13, 2014Publication date: September 4, 2014Applicant: POSCO LED COMPANY LTD.Inventors: Tae Hoon SONG, Min Uk Yoo, Dae Won Kim, Jung Hwa Kim, Sun Hwa Lee
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Patent number: 8814398Abstract: An optical semiconductor based illuminating apparatus including a housing having an opening portion, a lighting unit disposed adjacent to the housing that includes at least one optical semiconductor, a power supply mounted within the housing that supplies power to the lighting unit, and a gate unit connected to the opening part that opens and shuts the inner housing.Type: GrantFiled: June 28, 2012Date of Patent: August 26, 2014Assignee: Posco LED Company Ltd.Inventors: Seok-Jin Kang, Yoon-Gil Jang, Su-Woon Lee, Dong-Hee Kim, Min-A Jeong
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Publication number: 20140235698Abstract: Provided are RNA aptamer specifically binding to cancer metastasis-inducing domain of CEA (Carcinoembryonic antigen), a composition for prevention and/or inhibition and/or diagnosis of cancer metastasis containing the same as an active ingredient, and a method of prevention and/or inhibition and/or diagnosis of cancer metastasis using the same.Type: ApplicationFiled: September 23, 2011Publication date: August 21, 2014Applicants: POSCO, POSTECH ACADEMY-INDUSTRY FOUNDATIONInventors: Seong-Wook LEE, Young-Ju Lee, Jin-Sook Jeong
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Patent number: 8806910Abstract: A method for continuously removing scale from a hot-rolled carbon steel strip includes: cracking the scale on the hot-rolled steel strip; shot-blasting the cracked scale to remove the scale; deforming the hot-rolled steel strip so as to weaken the bond between scale remaining after the shot-blasting and the hot-rolled steel strip and so as to impart surface roughness to the hot-rolled steel sheet; and polishing the deformed hot-rolled steel strip to remove the remaining scale.Type: GrantFiled: May 19, 2009Date of Patent: August 19, 2014Assignee: PoscoInventors: Young-Sool Jin, Tae-Chul Kim, Soo-Hyoun Cho, Kee-Jo Jeong, Young-Ki Lee
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Patent number: 8801231Abstract: An optical semiconductor lighting apparatus including a housing with a first end portion and a second end portion that is open, a light source module disposed in the housing, a fan disposed adjacent to the light source module in the housing, the fan rotating in a first direction to blow air toward the light source module, and a reflector disposed adjacent to the second end portion of the housing, the reflector enhancing an illumination scope. A moving path, in which at least a portion of the air drawn into the housing by the fan externally flows through the light source module, is formed in the housing.Type: GrantFiled: January 24, 2013Date of Patent: August 12, 2014Assignee: POSCO LED Company Ltd.Inventors: Dong-Soo Kim, Seok-Jin Kang, Min-A Jeong
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Publication number: 20140219891Abstract: A separation method of zirconium and hafnium is described which includes an extraction process of agitating an undiluted aqueous solution containing zirconium, hafnium, and sulfuric acid with a first stirring solution containing an acidic extractant to produce a first extract solution in which the hafnium is extracted by the acidic extractant; and a recovery process of agitating the first extract solution with a second stirring solution containing a citric acid solution to produce a citric acid solution after extraction in which zirconium is reverse-extracted from the first extract solution to the citric acid solution so as to recover zirconium contained in the first extract solution. The method may reduce the amount of extractant while greatly enhancing the separation effect of zirconium and hafnium, and increase zirconium recovery rate by more than 97% through an additional zirconium recovery process while reducing a hafnium content in zirconium by less than 50 ppm.Type: ApplicationFiled: March 28, 2013Publication date: August 7, 2014Applicants: POSCO M-TECH, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hwa Young LEE, Byung Won CHO, Joong Kee LEE
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Publication number: 20140203722Abstract: An AC LED lighting apparatus using a voltage edge detector is provided. The AC LED lighting apparatus includes: a rectification unit configured to rectify an AC voltage to output a DC rectified voltage; an LED unit including a first light emitting group and a second light emitting group each including at least one LED; and an LED driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage. The LED driving control unit sets the reference voltage by detecting a slope of the rectified voltage and simultaneously detecting the voltage level of the rectified voltage and the detected slope of the rectified voltage.Type: ApplicationFiled: March 24, 2014Publication date: July 24, 2014Applicant: POSCO LED COMPANY LTD.Inventors: Seong Bok YOON, Dae Won Kim, Jong-Bum Kim
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Publication number: 20140203718Abstract: Exemplary embodiments of the present invention disclose an alternating current (AC) light emitting diode (LED) lighting apparatus including a rectification unit configured to receive an AC voltage and output a DC rectified voltage, an LED unit connected to the rectification unit, the LED unit comprising at least two light emitting groups, each light emitting group comprising at least one LED, and an LED driving control unit connected to the rectification unit, the LED driving control unit configured to establish a series or parallel connection between the light emitting groups, by comparing a voltage level of the rectified voltage with a reference voltage. The LED driving control unit is configured to calculate a reference voltage adjustment value in order to compensate for a signal processing delay of the LED driving control unit.Type: ApplicationFiled: March 24, 2014Publication date: July 24, 2014Applicant: POSCO LED COMPANY LTD.Inventors: Seong Bok YOON, Dae Won KIM, Jong-Bum KIM
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Patent number: 8785724Abstract: The present invention relates to a flowering-time and/or stem elongation regulator isolated from rice, which is selected from OsMADS50, OsMADSS1, OsMADS56, OsMADS14, OsTRX1, OsVIN1, OsCOL4 and OsCOLS, a DNA construct containing the regulator, a transgenic plant, a part thereof, and plant cell transformed with the DNA construct, and method to control flowering-time and/or stem elongation using the regulator. In the present invention, the flowering-time and/or stem elongation can be controlled, and thereby, various agricultural benefits obtained.Type: GrantFiled: June 22, 2007Date of Patent: July 22, 2014Assignees: Posco, Postech FoundationInventors: Gynheung An, Shinyoung Lee, Dong-Hoon Jeong, JiHye Yoo, Choong-Hwan Ryu, Jong-Seong Jeon, Sung-Ryul Kim, Young-Ock Kim, Joonyul Kim, Suyoung An, Jong-Jin Han, Min-Jung Han
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Publication number: 20140197749Abstract: An AC LED lighting apparatus using a voltage edge detector is provided. The AC LED lighting apparatus includes: a rectification unit configured to rectify an AC voltage to output a DC rectified voltage; an LED unit including a first light emitting group and a second light emitting group each including at least one LED; and an LED driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage. The LED driving control unit sets the reference voltage by detecting a slope of the rectified voltage and simultaneously detecting the voltage level of the rectified voltage and the detected slope of the rectified voltage.Type: ApplicationFiled: February 19, 2013Publication date: July 17, 2014Applicant: Posco LED Company Ltd.Inventors: Seong Bok YOON, Dae Won Kim, Jong-Bum Kim
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Patent number: 8778288Abstract: A separation method of zirconium and hafnium is described which includes an extraction process of agitating an undiluted aqueous solution containing zirconium, hafnium, and sulfuric acid with a first stirring solution containing an acidic extractant to produce a first extract solution in which the hafnium is extracted by the acidic extractant; and a recovery process of agitating the first extract solution with a second stirring solution containing a citric acid solution to produce a citric acid solution after extraction in which zirconium is reverse-extracted from the first extract solution to the citric acid solution so as to recover zirconium contained in the first extract solution. The method may reduce the amount of extractant while greatly enhancing the separation effect of zirconium and hafnium, and increase zirconium recovery rate by more than 97% through an additional zirconium recovery process while reducing a hafnium content in zirconium by less than 50 ppm.Type: GrantFiled: March 28, 2013Date of Patent: July 15, 2014Assignees: Korea Institute of Science and Technology, Posco M-TechInventors: Hwa Young Lee, Byung Won Cho, Joong Kee Lee
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Patent number: 8778097Abstract: A low specific gravity and high strength steel sheet includes C of 0.2% to 0.8%, Mn of 2% to 10%, P of 0.02% or less, S of 0.015% or less, Al of 3% to 15%, and N of 0.01% or less. A ratio of Mn/Al is 0.4 to 1.0. Retained austenite in a structure is included in the range of 1% or more. The steel sheet further includes one or two or more elements selected from the group consisting of Si of 0.1% to 2.0%, Cr of 0.1% to 0.3%, Mo of 0.05% to 0.5%, Ni of 0.1% to 2.0%, Cu of 0.1% to 1.0%, B of 0.0005% to 0.003%, Ti of 0.01% to 0.2%, Zr of 0.005% to 0.2%, Nb of 0.005% to 0.2%, W of 0.1% to 1.0%, Sb of 0.005% to 0.2%, and Ca of 0.001% to 0.2%.Type: GrantFiled: October 29, 2008Date of Patent: July 15, 2014Assignee: PoscoInventors: Kwang Geun Chin, Jai Hyun Kwak
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Publication number: 20140191673Abstract: An LED driving circuit includes: a bridge rectification circuit configured to receive an AC voltage and perform full-wave rectification on the AC voltage, the bridge rectification circuit including a first LED block, a second LED block, a third LED block, and a fourth LED block each including n LEDs (where n is a positive integer equal to or greater than one); a constant current IC configured to constantly limit a current flowing through the bridge rectification circuit; and a Vcc stabilization circuit connected between the constant current IC and a driving voltage supply node positioned between LEDs constituting one of the first to fourth LED blocks, and configured to stabilize a voltage applied through the bridge rectification circuit and provide the constant current IC with a stabilized driving voltage.Type: ApplicationFiled: December 3, 2013Publication date: July 10, 2014Applicant: POSCO LED COMPANY LTD.Inventors: Seong Bok Yoon, Dae Won Kim, Chul Ju Kim
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Patent number: 8766550Abstract: An AC LED lighting apparatus using a voltage edge detector is provided. The AC LED lighting apparatus includes: a rectification unit configured to rectify an AC voltage to output a DC rectified voltage; an LED unit including a first light emitting group and a second light emitting group each including at least one LED; and an LED driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage. The LED driving control unit sets the reference voltage by detecting a slope of the rectified voltage and simultaneously detecting the voltage level of the rectified voltage and the detected slope of the rectified voltage.Type: GrantFiled: February 19, 2013Date of Patent: July 1, 2014Assignee: Posco LED Co., Ltd.Inventors: Seong Bok Yoon, Dae Won Kim, Jong-Bum Kim
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Publication number: 20140175996Abstract: The LED lighting apparatus includes: a rectification block; an LED block including a first light emitting group and a second light emitting group; a charging/discharging block configured to charge electric charges in a charging period, and discharge electric charges in a discharging period; a driving control unit configured to determine a voltage level of a rectified voltage, controls a path selection switch to connect the rectification block to the LED block and controls the charging/discharging block to charge electric charges in the charging period, and controls the path selection switch to connect the rectification block to a ground and controls the charging/discharging block to discharge electric charges from the charging/discharging block to the LED block in the discharging period; and a path selection switch configured to connect the rectification block to the LED block in the charging period, and connect the rectification block to the ground in the discharging period.Type: ApplicationFiled: December 31, 2012Publication date: June 26, 2014Applicant: POSCO LED COMPANY LTD.Inventors: Seong Bok YOON, Dae Won Kim, Jung Hwa Kim
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Patent number: 8760058Abstract: A light emitting diode (LED) illuminating apparatus including a heat sink, a light emitting module, a power connection portion, a translucent cover and a wiring path. The heat sink has a plurality of heat dissipation fins. The light emitting module is positioned on an upper portion of the heat sink. The power connection portion is positioned below a lower portion of the heat sink. The translucent cover is mounted to cover an upper portion of the light emitting module. The wiring path is formed in the heat sink so as to accommodate a wire for electrically connecting the power connection portion and the light emitting module. In the LED illuminating apparatus, the light emitting module emits light by directly receiving AC power supplied through the wire accommodated in the wiring path.Type: GrantFiled: June 18, 2012Date of Patent: June 24, 2014Assignee: Posco LED Company Ltd.Inventors: Tae Hoon Song, Min Uk Yoo, Dae Won Kim, Jung Hwa Kim, Sun Hwa Lee
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Patent number: D713068Type: GrantFiled: May 17, 2013Date of Patent: September 9, 2014Assignee: Posco LED Company Ltd.Inventors: Hyun Ku Park, Dong Hee Kim
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Patent number: D714988Type: GrantFiled: June 7, 2013Date of Patent: October 7, 2014Assignee: Posco LED Company Ltd.Inventors: Hyun-Ku Park, Jae-Young Choi