Patents by Inventor Seo Jae Lee
Seo Jae Lee 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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Patent number: 11968874Abstract: An organic light-emitting display device includes quantum dots and an RGB color filter layer having quantum dots and thus is capable of removing 100% of interference among red, green, and blue color filters.Type: GrantFiled: May 26, 2020Date of Patent: April 23, 2024Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Jea Gun Park, Seung Jae Lee, Ji Eun Lee, Seo Yun Kim
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Publication number: 20240129725Abstract: A service identifying and processing method using a wireless terminal message according to an exemplary embodiment of the present invention includes (a) receiving a wireless terminal message by a first entity which is a mobile device; and (b) expressing, by a first agent which is an information processing application program installed on the first entity, entity information of second entity based on the wireless terminal message and service confirmation information related to service provided by the second entity, through an application screen by the first agent.Type: ApplicationFiled: December 23, 2021Publication date: April 18, 2024Applicant: ESTORM CO., LTD.Inventors: Jong Hyun WOO, Tae Il LEE, Il Jin JUNG, Hee Jun SHIN, Hyung Seok JANG, Min Jae SON, Sang Heon BAEK, Seo Bin PARK, Hyo Sang KWON, Mi Ju KIM, Jung Hoon SONG, Rakhmanov DILSHOD, Dong Hee KIM, Jeon Gjin KIM
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Publication number: 20200222592Abstract: A three-dimensional hydrogel scaffold of the present invention contains a cell to be transplanted in vivo and comprises a first hydrogel block on which a plurality of holes are formed and one or more second hydrogel blocks which are assembled to the holes and are biodegradable. A large hydrogel scaffold can be prepared by means of the assembly of the blocks. The survivability of the cell being transplanted is high and the biodegradability of the blocks varies, and thus the risk of hypoxia is reduced.Type: ApplicationFiled: September 27, 2018Publication date: July 16, 2020Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATIONInventors: Dong Yun LEE, Seo Jae LEE
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Patent number: 9666862Abstract: Provided is a lithium secondary battery having improved discharge characteristics in a range of high-rate discharge while minimizing a dead volume and at the same time, having increased cell capacity via increased electrode density and electrode loading amounts, by inclusion of two or more active materials having different redox levels so as to exert superior discharge characteristics in the range of high-rate discharge via sequential action of cathode active materials in a discharge process, and preferably having different particle diameters.Type: GrantFiled: February 22, 2006Date of Patent: May 30, 2017Assignee: LG Chem, Ltd.Inventors: Sung kyun Chang, Seo-Jae Lee, Sanghoon Choy, Euiyong Bang, Minchul Jang, Ki-Young Lee
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Patent number: 9614214Abstract: The present invention relates to a method for improving charge/discharge cycle characteristics of a lithium secondary battery using a Si based anode active material, the method comprising surface-treating a surface of an anode current collector to have specific morphology, and preferably vapor-depositing a silicon film, as the anode active material by sputtering under application of bias voltage to the surface-treated anode current collector, and/or disposing an adhesive layer between the surface-treated anode current collector and silicon film, so as to reinforce bondability between the anode current collector and active material, ultimately leading to improvement of charge/discharge characteristics of the battery.Type: GrantFiled: December 16, 2004Date of Patent: April 4, 2017Assignee: LG CHEM, LTD.Inventors: Sung-Man Lee, Seo-Jae Lee
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Patent number: 9349497Abstract: Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction.Type: GrantFiled: December 9, 2013Date of Patent: May 24, 2016Assignee: LG Chem, Ltd.Inventors: Jeyoung Kim, Taeyeon Kim, Seo-Jae Lee, Wonseok Chang, Seungyoun Choi
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Patent number: 9276259Abstract: Provided is a lithium secondary battery having improved discharge characteristics in a range of high-rate discharge while minimizing a dead volume and at the same time, having increased cell capacity via increased electrode density and electrode loading amounts, by inclusion of two or more active materials having different redox levels so as to exert superior discharge characteristics in the range of high-rate discharge via sequential action of cathode active materials in a discharge process, and preferably having different particle diameters.Type: GrantFiled: March 28, 2014Date of Patent: March 1, 2016Assignee: LG Chem, Ltd.Inventors: Sung Kyun Chang, Seo-Jae Lee, Sanghoon Choy, Euiyong Bang, Minchul Jang, Ki-Young Lee
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Publication number: 20140242464Abstract: Provided is a lithium secondary battery having improved discharge characteristics in a range of high-rate discharge while minimizing a dead volume and at the same time, having increased cell capacity via increased electrode density and electrode loading amounts, by inclusion of two or more active materials having different redox levels so as to exert superior discharge characteristics in the range of high-rate discharge via sequential action of cathode active materials in a discharge process, and preferably having different particle diameters.Type: ApplicationFiled: March 28, 2014Publication date: August 28, 2014Applicant: LG Chem, Ltd.Inventors: Sung Kyun Chang, Seo-Jae Lee, Sanghoon Choy, Euiyong Bang, Minchul Jang, Ki-Young Lee
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Publication number: 20140099546Abstract: Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction.Type: ApplicationFiled: December 9, 2013Publication date: April 10, 2014Applicant: LG Chem, Ltd.Inventors: Jeyoung Kim, Taeyeon Kim, Seo-Jae Lee, Wonseok Chang, Seungyoun Choi
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Patent number: 8632698Abstract: Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction. Accordingly, it is possible to achieve a high capacity battery.Type: GrantFiled: July 25, 2008Date of Patent: January 21, 2014Assignee: LG Chem, Ltd.Inventors: Jeyoung Kim, Taeyeon Kim, Seo-Jae Lee, Wonseok Chang, Seungyoun Choi
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Patent number: 8585921Abstract: Provided is an electrode mix for a secondary battery containing an electrode active material, comprising a PVA having a degree of polymerization of more than 2500 and a degree of saponification of more than 90% as a binder, and a lithium secondary battery comprising the same. Use of the binder according to the present invention can provide advantageous effects such as improved adhesive strength between the electrode mix and current collector and between the electrode mixes, prevention of the peeling and separation of the active material even after repeated charge/discharge cycles, and inhibition of decreases in the capacity or output power retention rate of the secondary battery.Type: GrantFiled: January 12, 2007Date of Patent: November 19, 2013Assignee: LG Chem, Ltd.Inventors: Minjung Ryu, Young-Min Kim, Eun-Suok Oh, SeungRim Yang, Juhyun Kim, Ki Woo Chun, ChanHong Lee, Ki-Young Lee, Seo-Jae Lee, JongMoon Jin, Taeyeon Kim
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Publication number: 20120231341Abstract: Embodiments of the present invention are directed to a positive active material, an electrode including the positive active material, and a lithium battery including the electrode. Due to the inclusion of a phosphate compound having an olivine structure and a lithium nickel composite oxide in the positive active material, the positive active material has high electric conductivity and high electrode density. A lithium battery manufactured using the positive active material has high capacity and good high-rate characteristics.Type: ApplicationFiled: September 24, 2011Publication date: September 13, 2012Inventors: Jun-Sik Kim, Chong-Hoon Lee, Sung-Soo Kim, Seo-Jae Lee, Jeong-Soon Shin
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Patent number: 8182939Abstract: Disclosed is an anode material comprising a metal core layer capable of repetitive lithium intercalation/deintercalation; an amorphous carbon layer coated on the surface of the metal core layer, and a crystalline carbon layer coated on the amorphous carbon layer. The anode material not only maintains a high charge/discharge capacity, which is an advantage of a metal-based anode material, but also inhibits changes in the volume of a metal core layer caused by repetitive lithium intercalation/deintercalation in virtue of an amorphous carbon layer and a crystalline carbon layer, thereby improving the cycle life characteristics of cells.Type: GrantFiled: June 25, 2004Date of Patent: May 22, 2012Assignee: LG Chem, Ltd.Inventors: You Min Kim, Ki Young Lee, Seo Jae Lee, Suk Myung Roh, Ou Jung Kwon
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Patent number: 8067116Abstract: Disclosed are an electrode active material, having a composition of SnPx (0.9?x?0.98), an electrode comprising the same, and a lithium secondary battery comprising the electrode. Also disclosed is a method for preparing an electrode active material having a composition of SnPx (0.9?x?0.98), the method comprising the steps of: preparing a mixed solution of a Sn precursor, trioctyl phosphine (TOP) and trioctyl phosphine oxide (TOPO); and heating the solution. The application of the teardrop-shaped single-crystal SnP0-94 particles as an anode active material for lithium secondary batteries can provide an anode having very excellent cycling properties because the active material has a reversible capacity, which is about two times as large as that of a carbon anode, along with a very low irreversible capacity, and it is structurally very stable against Li ion intercalation/deintercalation in a charge/discharge process, indicating little or no change in the volume thereof.Type: GrantFiled: August 23, 2007Date of Patent: November 29, 2011Assignee: LG Chem, Ltd.Inventors: Ki-Tae Kim, Min-Gyu Kim, Jae-Phil Cho, Soon-Ho Ahn, Seo-Jae Lee
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Patent number: 7976985Abstract: Disclosed is an electrode active material comprising: a core layer capable of repeating lithium intercalation/deintercalation; an amorphous carbon layer; and a crystalline carbon layer, successively, wherein the core layer comprises at least two core particles. A secondary battery comprising the same electrode active material is also disclosed. The electrode active material can inhibit variations in volume of the core layer that may occur during repeated charge/discharge cycles, since the core layer comprising at least two core particles, each core particle having an increased area that is in contact with the carbon layer coated thereon. Therefore, the battery using the electrode active material can provide improved cycle life characteristics.Type: GrantFiled: October 27, 2006Date of Patent: July 12, 2011Assignee: LG Chem, Ltd.Inventors: Ou Jung Kwon, Yong Ju Lee, Won Seok Chang, Ki Tae Kim, Seo Jae Lee, Ki Young Lee
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Publication number: 20110129729Abstract: Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction. Accordingly, it is possible to achieve a high capacity battery.Type: ApplicationFiled: July 25, 2008Publication date: June 2, 2011Applicant: LG CHEM, LTD.Inventors: JeYoung Kim, Taeyeon Kim, Seo-Jae Lee, WonSeok Chang, Seungyoun Choi
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Patent number: 7927733Abstract: Disclosed is a battery casing, comprising one or more sub-layers as constitutional elements, wherein at least one region selected from the group consisting of a surface of the casing and the sub-layers of the casing is coated partially or totally with a metal having a grain size of 50 nm or less. A battery comprising the same casing is also disclosed. The casing efficiently inhibits degradation of the safety of a battery, caused by internal or external factors, and thus provides a battery with excellent safety.Type: GrantFiled: January 6, 2006Date of Patent: April 19, 2011Assignees: LG Chem, Ltd., Future Metal CorporationInventors: Seo Jae Lee, Ki Young Lee, Ho Kyung Byun, Yong Bum Park, Chang Sung Ha, Byung Gi Jeon, Young Tack An, Sung Min Hwang, Joon Sung Bae
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Publication number: 20110006253Abstract: Disclosed are an electrode active material, having a composition of SnPx (0.9?x?0.98), an electrode comprising the same, and a lithium secondary battery comprising the electrode. Also disclosed is a method for preparing an electrode active material having a composition of SnPx (0.9?x?0.98), the method comprising the steps of: preparing a mixed solution of a Sn precursor, trioctyl phosphine (TOP) and trioctyl phosphine oxide (TOPO); and heating the solution. The application of the teardrop-shaped single-crystal SnPO-94 particles as an anode active material for lithium secondary batteries can provide an anode having very excellent cycling properties because the active material has a reversible capacity, which is about two times as large as that of a carbon anode, along with a very low irreversible capacity, and it is structurally very stable against Li ion intercalation/deintercalation in a charge/discharge process, indicating little or no change in the volume thereof.Type: ApplicationFiled: August 23, 2007Publication date: January 13, 2011Applicant: LG Chem, Ltd.Inventors: Ki-Tae Kim, Min-Gyu Kim, Jae-Phil Cho, Soon-Ho Ahn, Seo-Jae Lee
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Publication number: 20080107963Abstract: Disclosed is a battery casing, comprising one or more sub-layers as constitutional elements, wherein at least one region selected from the group consisting of a surface of the casing and the sub-layers of the casing is coated partially or totally with a metal having a grain size of 50 nm or less. A battery comprising the same casing is also disclosed. The casing efficiently inhibits degradation of the safety of a battery, caused by internal or external factors, and thus provides a battery with excellent safety.Type: ApplicationFiled: January 6, 2006Publication date: May 8, 2008Applicant: LG CHEM, LTD. AND FUTURE METAL CORPORATIONInventors: Seo Jae Lee, Ki Young Lee, Ho Kyung Byun, Yong Bum Park, Chang Sung Ha, Byung Gi Jeon, Young Tack An, Sung Min Hwang, Joon Sung Bae
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Publication number: 20070264568Abstract: Provided is an electrode mix for a secondary battery containing an electrode active material, comprising a PVA having a degree of polymerization of more than 2500 and a degree of saponification of more than 90% as a binder, and a lithium secondary battery comprising the same. Use of the binder according to the present invention can provide advantageous effects such as improved adhesive strength between the electrode mix and current collector and between the electrode mixes, prevention of the peeling and separation of the active material even after repeated charge/discharge cycles, and inhibition of decreases in the capacity or output power retention rate of the secondary battery.Type: ApplicationFiled: January 12, 2007Publication date: November 15, 2007Applicant: LG CHEM, LTD.Inventors: Minjung Ryu, Young-Min Kim, Eun-Suok Oh, SeungRim Yang, Juhyun Kim, Ki Woo Chun, ChanHong Lee, Ki-Young Lee, Seo-Jae Lee, JongMoon Jin, Taeyeon Kim