Patents by Inventor Jung Eun Hyun
Jung Eun Hyun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160247147Abstract: A server is provided to securely provide information to a purchasing user about all memberships for which points may be accumulated in an affiliated store according to affiliated store information. The server includes a communication module to provide one-time card information to a user terminal and to obtain payment completion information, including the one-time card information and affiliated store information from a payment terminal, and a control module to determine at least one membership for which points are accumulated according to the affiliated store information, and determine whether a user of the user terminal has the at least one membership according to the one-time card information. The control module allows the communication module to provide membership information according to the determined results to the user terminal including operations permitting the user to join memberships for which points may be accumulated.Type: ApplicationFiled: February 23, 2016Publication date: August 25, 2016Inventors: Kyung Dong KIM, Boo Hyun CHO, Kyung Duk KIM, Shin Woo LEE, Jung Eun HYUN
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Patent number: 9419283Abstract: Provided is a non-aqueous lithium secondary battery comprising an electrode assembly composed of a cathode, an anode, and a separator interposed between the cathode and anode, wherein the cathode and anode have an electrode material containing an active material applied on a current collector, a non-aqueous electrolyte containing a lithium salt, hydrophobic inactive-particles (also, referred to as “hydrophobic particles”) included in the electrode material, and a battery case sealing all the constituent components. Upon adding hydrophobic inactive-particles to the electrode material in a non-aqueous lithium secondary battery, absorption and inflow of water into the electrode material during the battery production is effectively inhibited such as to prevent side reactions caused by water inside the battery, thereby exhibiting improvement in the high-temperature storage characteristics of the battery.Type: GrantFiled: August 4, 2007Date of Patent: August 16, 2016Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jung Eun Hyun, Eun Ju Lee, Hanho Lee
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Patent number: 9269951Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: GrantFiled: November 11, 2014Date of Patent: February 23, 2016Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Patent number: 9263738Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.Type: GrantFiled: September 17, 2014Date of Patent: February 16, 2016Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Publication number: 20150060726Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: ApplicationFiled: November 11, 2014Publication date: March 5, 2015Applicant: LG CHEM, LTD.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Patent number: 8936873Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: GrantFiled: March 22, 2010Date of Patent: January 20, 2015Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Publication number: 20150004492Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.Type: ApplicationFiled: September 17, 2014Publication date: January 1, 2015Applicant: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Patent number: 8895187Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.Type: GrantFiled: February 26, 2010Date of Patent: November 25, 2014Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Publication number: 20110039159Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: ApplicationFiled: March 22, 2010Publication date: February 17, 2011Applicant: LG CHEM, LTD.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Publication number: 20110020705Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.Type: ApplicationFiled: February 26, 2010Publication date: January 27, 2011Applicant: LG CHEM, LTD.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Patent number: 7816033Abstract: Provided is a high-power, non-aqueous electrolyte lithium secondary battery having a long lifespan and superior safety at both room temperature and high temperatures, even after repeated high-current charging and discharging. The battery comprises a mixture of a manganese spinel oxide and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: GrantFiled: May 29, 2007Date of Patent: October 19, 2010Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jung Eun Hyun, Youngjoon Shin
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Patent number: 7700238Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a mixture of a lithium/manganese spinel oxide having a substitution of a manganese (Mn) site with a certain metal ion and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: GrantFiled: August 14, 2006Date of Patent: April 20, 2010Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Patent number: 7670722Abstract: Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein at least one of two oxides has an average particle diameter of more than 15 ?m.Type: GrantFiled: August 14, 2006Date of Patent: March 2, 2010Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Min Su Kim, Jung Eun Hyun, Jaepil Lee, Eun Ju Lee, Youngjoon Shin
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Publication number: 20100015523Abstract: Provided is a non-aqueous lithium secondary battery comprising an electrode assembly composed of a cathode, an anode, and a separator interposed between the cathode and anode, wherein the cathode and anode have an electrode material containing an active material applied on a current collector, a non-aqueous electrolyte containing a lithium salt, hydrophobic inactive-particles (also, referred to as “hydrophobic particles”) included in the electrode material, and a battery case sealing all the constituent components. Upon adding hydrophobic inactive-particles to the electrode material in a non-aqueous lithium secondary battery, absorption and inflow of water into the electrode material during the battery production is effectively inhibited such as to prevent side reactions caused by water inside the battery, thereby exhibiting improvement in the high-temperature storage characteristics of the battery.Type: ApplicationFiled: August 4, 2007Publication date: January 21, 2010Applicant: LG Chem. Ltd.Inventors: Ji Heon Ryu, Jung Eun Hyun, Eun Ju Lee, Hanho Lee
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Publication number: 20100012886Abstract: Provided is a high-power, non-aqueous electrolyte lithium secondary battery having a long lifespan and superior safety at both room temperature and high temperatures, even after repeated high-current charging and discharging. The battery comprises a mixture of a manganese spinel oxide and a lithium/nickel/cobalt/manganese composite oxide, as a cathode active material.Type: ApplicationFiled: May 29, 2007Publication date: January 21, 2010Applicant: LG Chem, Ltd.Inventors: Ji Heon Ryu, Jung Eun Hyun, Youngjoon Shin
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Patent number: 7560191Abstract: Disclosed herein is a lithium secondary battery having improved life characteristics by removal of metal ion impurities incorporated during an assembly process of the battery via a cation exchange process, thereby preventing electrodeposition of the metal ions on an anode, through the addition of a cation exchange material, containing cations selected from the group consisting of lithium, sodium, ammonium and any combination thereof, to an electrode and/or a surface of a separator.Type: GrantFiled: September 21, 2006Date of Patent: July 14, 2009Assignee: LG Chem, Ltd.Inventors: Ji Heon Ryu, Eun Ju Lee, Jung Eun Hyun, Jaepil Lee, Jeong Hee Choi, Min Su Kim, Youngjoon Shin
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Publication number: 20070243468Abstract: Disclosed herein is a lithium secondary battery including a phosphate compound, wherein metal ion impurities incorporated during a fabrication process of the battery are precipitated to thereby prevent electrodeposition of the metal ions on an anode, through the addition of one or more phosphates of Formula I to an electrode, an electrolyte or the surface of a separator: AxH(3?x)PO4 ??(I) wherein, A is Li, Na or NH4; and O<x?3.Type: ApplicationFiled: October 25, 2006Publication date: October 18, 2007Applicant: LG CHEM, LTD.Inventors: Ji Heon RYU, Eun Ju LEE, Jaepil LEE, Jung Eun HYUN, Jeong Hee CHOI, Min Su KIM, Youngjoon SHIN