Patents Assigned to LG Chemical Co., Ltd.
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Patent number: 7709153Abstract: The present invention provides a multi-component composite film comprising a) polymer support layer; and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.Type: GrantFiled: October 7, 2008Date of Patent: May 4, 2010Assignee: LG Chemical Co., Ltd.Inventors: Seung-Jin Lee, Hyang-Mok Lee, Soon-Ho Ahn, Jin-Yeon Cho, Hyun-Hang Yong, Hyung-Keun Lee, Sang-Young Lee, Heon-Sik Song, Soon-Yong Park, You-Jin Kyung, Byeong-In Ahn
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Patent number: 7705923Abstract: A polarizer integrated with a transparent conductive film for a liquid crystal display includes a lower film an optical film and a transparent conductive film. A touch panel integrated with the polarizer is formed by attaching an upper sheet to the upper surface of the polarizer integrated with a transparent conductive film. A flat panel display with an integral type touch panel includes a touch panel integrated with the flat panel display having a lower polarizer, a liquid crystal display and an upper polarizer.Type: GrantFiled: February 26, 2009Date of Patent: April 27, 2010Assignees: LG Display Co., Ltd., LG Chemical Co. Ltd.Inventors: Yun Cheol Jeong, Young Soo Ahn, Jang Youl Rhee, Byoung Hyun Jeong
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Publication number: 20090263591Abstract: The present invention provides a multi-component composite film comprising a) polymer support layer, and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.Type: ApplicationFiled: October 7, 2008Publication date: October 22, 2009Applicant: LG CHEMICAL CO., LTD.Inventors: Seung-Jin LEE, Hyang-Mok Lee, Soon-Ho Ahn, Jin-Yeon Cho, Hyun-Hang Yong, Hyung-Keun Lee, Sang-Young Lee, Heon-Sik Song, Soon-Yong Park, You-Jin Kyung, Byeong-In Ahn
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Publication number: 20090042104Abstract: The present invention provides a multi-component composite film comprising a) polymer support layer; and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.Type: ApplicationFiled: October 7, 2008Publication date: February 12, 2009Applicant: LG CHEMICAL CO., LTD.Inventors: Seung-Jin LEE, Hyang-Mok Lee, Soon-Ho Ahn, Jin-Yeon Cho, Hyun-Hang Yong, Hyung-Keun Lee, Sang-Young Lee, Heon-Sik Song, Soon-Yong Park, You-Jin Kyung, Byeong-In Ahn
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Patent number: 7470488Abstract: The present invention provides a multi-component composite film comprising a) polymer support layer; and b) porous gellable polymer layer which is formed on one side or both sides of the support layer of a), wherein the support film of a) and the gellable polymer layer of b) are unified without the interface, a method for preparing the same, and a polymer electrolyte system applied the same.Type: GrantFiled: August 11, 2001Date of Patent: December 30, 2008Assignee: LG Chemical Co., Ltd.Inventors: Seung-Jin Lee, Hyang-Mok Lee, Soon-Ho Ahn, Jin-Yeon Cho, Hyun-Hang Yong, Hyung-Keun Lee, Sang-Young Lee, Heon-Sik Song, Soon-Yong Park, You-Jin Kyung, Byeong-In Ahn
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Patent number: 7087269Abstract: The present invention relates to a multi-component composite separate membrane and a method for preparing the same, and to a multi-component composite membrane comprising a support layer and active layers, wherein the support layer is located between the active layers.Type: GrantFiled: June 22, 2001Date of Patent: August 8, 2006Assignee: LG Chemical Co., Ltd.Inventors: Sang-Young Lee, Byeong-In Ahn, Soon-Yong Park, You-Jin Kyung, Heon-Sik Song
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Patent number: 7056486Abstract: The present invention relates to lithium manganese complex oxide with a spinel structure used as an active material of a lithium or lithium ion secondary battery. Specifically, the present invention relates to a process for preparing lithium manganese complex oxide having improved cyclic performance at a high temperature above room temperature, and a lithium or lithium ion secondary battery using the oxide prepared according to said process as a cathode active material.Type: GrantFiled: January 19, 2001Date of Patent: June 6, 2006Assignee: LG Chemical Co., Ltd.Inventors: Hong-Kyu Park, Yong-Hoon Kwon, Joon-Sung Bae, Ki-Young Lee
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Patent number: 7019049Abstract: The present invention relates to an impact resistant resin composition having superior balance of physical properties of chromacity, impact resistance and strength, and a process for preparing an impact resistant resin composition that can largely reduce draining treatment. The process of the present invention comprises the steps of preparing a resin without rubber ingredient by a mass polymerization, and adding and mixing a conjugated copolymer having rubber ingredient, when the resin is molten in the latter part of monomer-removal process, to prepare an impact resistant resin composition, wherein the conjugated copolymer is previously dehydrated and dried by filtering a copolymerization liquid.Type: GrantFiled: November 3, 2000Date of Patent: March 28, 2006Assignee: LG Chemical Co. Ltd.Inventors: Keun Hoon Yoo, Jeong Su Choi, Sung Hee Kim, Chan Hong Lee
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Patent number: 6929788Abstract: The present invention relates to a method for preparing a lithium manganese complex oxide Li1+xMn2?xO4 (0?x?0.12) used as a cathode active material of a lithium or lithium ion secondary battery. The present invention provides a method for preparing a manganese compound comprising the step of simultaneously applying a mechanical force and heat energy to a manganese compound to remove defects present in particles of the manganese compound and to control the aggregation of particles and the shape of the aggregated particles, a method for preparing a lithium manganese complex oxide with a spinel structure using the manganese compound prepared by the above method as a raw material, and a lithium or lithium ion secondary battery using the lithium manganese complex oxide with a spinel structure prepared by the above method as a cathode active material.Type: GrantFiled: December 15, 2000Date of Patent: August 16, 2005Assignee: LG Chemical Co., Ltd.Inventors: Hong-Kyu Park, Seong-Yong Park, Ki-Young Lee, Joon-Sung Bae
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Patent number: 6881514Abstract: An electrochemical element with improved energy density is provided. The electrochemical element has electrochemical cells which are multiply stacked. The electrochemical cell is stacked with the full cell or bicell as a basic unit and a separator film is interposed between the adjoining portion of the cells. The electrochemical element is easy to manufacture, has a structure which uses the space available efficiently, and can maximize the content of the active electrode material so that a highly integrated battery can be implemented.Type: GrantFiled: February 8, 2001Date of Patent: April 19, 2005Assignee: LG Chemical Co., Ltd.Inventors: Soon-Ho Ahn, Hyang-Mok Lee, Seung-Jin Lee, Tae-Hyung Kim, Hyung-Keun Lee
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Patent number: 6855786Abstract: The present invention relates to a method of preparing an impact-reinforcement agent for polyvinylchloride (PVC) resin having superior anti-stress whitening properties, and specifically to a method for preparing a graft copolymer of methyl-methacrylate-butadiene-styrene (MBS) comprising 3 steps of graft-copolymerizing monomers such as alkylmethacrylate, acrylate, and an ethylene-unsaturated aromatic compound to a rubber latex, in sequence.Type: GrantFiled: October 26, 2001Date of Patent: February 15, 2005Assignee: LG Chemical Co., Ltd.Inventors: Joo-Sik Oh, Sung-Koo Noh, Ok-Youl Jeong
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Patent number: 6838206Abstract: In a battery in which a separator is disposed between a cathode and an anode, a jelly roll is wound with the separator. The cathode, the anode and the separator are received in a battery case and surrounded with an electrolyte, and an opening of the battery case is sealed by a top cap assembly connected to the cathode. A curved groove is formed on the battery case as a safety element for preventing the explosion of the battery due to an increase of internal pressure, the groove being formed along a line of equal stress on the surface of the battery case.Type: GrantFiled: September 28, 2001Date of Patent: January 4, 2005Assignee: LG Chemical Co., Ltd.Inventors: Soo-Ryoung Kim, Ho-Kyung Byun, Yong-Rae Kim, Kwang-Ho Yoo, Jee-Ho Kim
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Patent number: 6830849Abstract: The present invention relates to a high crystalline polypropylene microporous membrane and a preparation method of the same, and it provides a preparation method of a polypropylene microporous membrane comprising the steps of preparing a precursor film using high crystalline polypropylene having a crystallinity of 50% or more and a very high isotacticity, annealing, stretching at a low temperature, stretching at a high temperature, and heat setting, and a polypropylene microporous membrane having superior permeability and mechanical properties prepared by the preparation method.Type: GrantFiled: September 7, 2001Date of Patent: December 14, 2004Assignee: LG Chemical Co., Ltd.Inventors: Sang-Young Lee, Byeong-In Ahn, Sung-Gap Im, Soon-Yong Park, Heon-Sik Song, You-Jin Kyung
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Patent number: 6797739Abstract: The preset invention relates to a photosensitive composition, and provides a triazine-based compound comprising new functionalized alkylthio groups of which long term storage characteristics at room temperature as well as photochemical activity as a photopolymerization initiator are superior.Type: GrantFiled: September 27, 2002Date of Patent: September 28, 2004Assignee: LG Chemical Co., Ltd.Inventors: Sung-Hyun Kim, Chul-Woo Lee, Jin-Seuk Kim, Jae-Hwan Lee, Dong-Chang Choi, Hyuk-Jin Cha
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Publication number: 20040169175Abstract: The present invention relates to electronic devices comprising an organic compound acting to inject or transport holes with p-type semi-conducting characteristics. The present invention provides for electronic devices comprising at least one or more layers selected from a group composed of a hole injecting layer, a hole transporting layer, and a hole injecting and transporting layer which comprises hexaazatriphenylene based organic compound represented by chemical formula (1), wherein the devices can use low drive-voltage, and can improve a light-emitting life.Type: ApplicationFiled: March 10, 2004Publication date: September 2, 2004Applicant: LG CHEMICAL CO., LTD.Inventors: Se-Hwan Son, Ok-Hee Kim, Seok-Hee Yoon, Kong-Kyeom Kim, Youn-Gu Lee, Jae-Soon Bae
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Patent number: 6774182Abstract: The present invention relates to a process for preparing a heat-resistant thermoplastic resin, especially to a process for preparing a heat-resistant thermoplastic resin having superior heat-stability prepared by mixing a graft ABS polymer and a heat-resistant copolymer. The heat resistant thermoplastic resin prepared by the process of the present invention not only has superior heat-resistant properties, impact resistant properties, and workability, but also has superior heat-stability.Type: GrantFiled: February 25, 2002Date of Patent: August 10, 2004Assignee: LG Chemical Co., Ltd.Inventors: Keun-Hoon Yoo, Dong-Sung Kim, Chan-Hong Lee
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Patent number: 6753382Abstract: The present invention relates to a method of acrylonitrile-butadiene-styrene (ABS) rubber latex, and the acrylonitrile-butadiene-styrene (ABS) latex is prepared by graft-polymerizing butadiene rubber with the monomers of acrlylonitrile and styrene through emulsion-polymerization, so that the ABS rubber latex of the present invention has high solid content. The method of ABS rubber latex of the present invention comprises the step of emulsion-polymerizing i) polybutadiene rubber latex; ii) aromatic vinyl compound; and iii) vinyl cyanide with the addition of a reactive emulsifier. According to the method of the present invention, the ABS rubber latex has high solid content due to a decrease in the amount of coagulated materials and film, which formed on the rubber latex during polymerization, and an increase in the production volume.Type: GrantFiled: July 22, 2002Date of Patent: June 22, 2004Assignee: LG Chemical Co., Ltd.Inventors: Geon-Soo Kim, Chan-Hong Lee, Byung-Tae Yang, Joo-Byung Chai
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Patent number: 6726733Abstract: The present invention relates to an electrochemical element, specifically an electrochemical element with improved energy density comprising stacked electrochemical cells. In order to achieve such objects, the present invention provides an electrochemical element comprising electrochemical cells which are multiply stacked, said electrochemical cells formed by stacking full cells or bicells having a cathode, a separator layer, and an anode sequentially as a basic unit, and a separator film interposed between each stacked cell wherein, said separator film has a unit length which is determined to wrap the electrochemical cells, and folds outward every unit length to fold each electrochemical cell in a Z-shape starting from the electrochemical cell of a first spot to the electrochemical cell of the last spot continuously while the remaining separator film wraps an outer portion of the stacked cell and a method for manufacturing the same.Type: GrantFiled: October 5, 2001Date of Patent: April 27, 2004Assignee: LG Chemical Co., Ltd.Inventors: Hyang-Mok Lee, Soon-Ho Ahn, Kyung-Joon Kim, Jae-Hyun Lee
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Patent number: 6720372Abstract: The present invention relates to a halogen free flame retardant thermoplastic styrene resin composition. More particularly, the present invention relates to a flame retardant resin composition, comprising (A) a graft copolymer consisting of rubber modified styrenic resin, (B) a polycarbonate resin, (C) a phenol novolak resin, (D) a copolymer consisting of styrene, and (E) an aromatic phosphate. The resin composition of the present invention has a superior flame retardancy using a halogen free flame retardant and a little amount of polycarbonate resin.Type: GrantFiled: April 29, 2002Date of Patent: April 13, 2004Assignee: LG Chemical Co., Ltd.Inventors: Sung-Ho Lee, Chan-Hong Lee, Yong-Yeon Hwang, Ki-Young Nam
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Patent number: 6720573Abstract: The present invention relates to electronic devices comprising an organic compound acting to inject or transport holes with p-type semi-conducting characteristics. The present invention provides for electronic devices comprising at least one or more layers selected from a group composed of a hole injecting layer, a hole transporting layer, and a hole injecting and transporting layer which comprises hexaazatriphenylene based organic compound represented by chemical formula (1), wherein the devices can use low drive-voltage, and can improve a light-emitting life.Type: GrantFiled: August 30, 2001Date of Patent: April 13, 2004Assignee: LG Chemical Co., Ltd.Inventors: Se-Hwan Son, Ok-Hee Kim, Seok-Hee Yoon, Kong-Kyeom Kim, Youn-Gu Lee, Jae-Soon Bae