Patents by Inventor Kee Choi

Kee Choi 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).

  • Patent number: 10010861
    Abstract: Carbon dioxide adsorbents are provided. The carbon dioxide adsorbents include a polymeric amine and a porous support on which the polymeric amine is supported. the polymeric amine consists of a polymer skeleton containing nitrogen atoms and branched chains bonded to the nitrogen atoms of the polymer skeleton. Each of the branched chains contains at least one nitrogen atom, the polymeric amine is modified by substitution of at least one of the nitrogen atoms of the polymer skeleton or the branched chains with a hydroxyl group-containing carbon chain.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: July 3, 2018
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Min Kee Choi, Woo Sung Choi
  • Patent number: 10009610
    Abstract: Techniques related to content adaptive prediction and entropy coding of motion vectors are described.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 26, 2018
    Assignee: Intel Corporation
    Inventors: Atul Puri, Daniel Socek, Chang Kee Choi
  • Publication number: 20180008958
    Abstract: Carbon dioxide adsorbents are provided. The carbon dioxide adsorbents include a polymeric amine and a porous support on which the polymeric amine is supported. the polymeric amine consists of a polymer skeleton containing nitrogen atoms and branched chains bonded to the nitrogen atoms of the polymer skeleton. Each of the branched chains contains at least one nitrogen atom. the polymeric amine is modified by substitution of at least one of the nitrogen atoms of the polymer skeleton or the branched chains with a hydroxyl group-containing carbon chain.
    Type: Application
    Filed: July 10, 2017
    Publication date: January 11, 2018
    Inventors: Min Kee CHOI, Woo Sung CHOI
  • Patent number: 9866554
    Abstract: A method for a Mobile Mobility Entity (MME) to carry out mutual authentication with a group of Machine Type Communication (MTC) devices includes receiving group-related authentication data from a leader, transmitting the received information and an identification number of the MME, to a HSS, receiving from the HSS a random value, an Authentication Vector and information of group members, broadcasting the random value and the first authentication token to the MTC device group based on information received from the HSS, receiving from the leader a leader authentication response that the leader generates by using a local master key value calculated by using the first secret key value, authenticating the leader by comparing the leader authentication response with a leader authentication value received from the HSS, and authenticating members within the MTC device group according to the leader authentication result.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: January 9, 2018
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Hyoung Kee Choi, Dae Sung Choi, Young Jo Kim, Ji Young Park, Dong Hyuk Shin, Joon Woo Yu
  • Publication number: 20170318297
    Abstract: Techniques related to content adaptive prediction and entropy coding of motion vectors are described.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Atul Puri, Daniel Socek, Chang Kee Choi
  • Patent number: 9762911
    Abstract: Techniques related to content adaptive prediction and entropy coding of motion vectors are described.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: September 12, 2017
    Assignee: Intel Corporation
    Inventors: Atul Puri, Daniel Socek, Chang Kee Choi
  • Publication number: 20170169144
    Abstract: The present invention relates to a method and device for generating an engineering topology of a digital substation. The method may include: generating, by a single line diagram generation module, a single line diagram of the digital substation based on input information regarding a plurality of substation component devices and connection relations therebetween; converting, by a topology conversion module, the single line diagram of the digital substation into an engineering topology conforming to international standards by use of conversion conditions stored in a topology component management module; verifying, by a topology verification module, whether the engineering topology is suitable for the digital substation based on the international standards; and generating, by an international standard file generation module, a single line diagram engineering file of the digital substation as a system specification description (SSS) by use of the verified engineering topology.
    Type: Application
    Filed: February 24, 2017
    Publication date: June 15, 2017
    Inventors: Byung Tae JANG, Nam Ho LEE, Yong Ho AN, Jong Kee CHOI, Jeong Yeol HAN, You Jin LEE, Eung Bo SHIM, Dong Il LEE
  • Publication number: 20170158970
    Abstract: The present disclosure relates to a method for preparing a multi-level pore zeolite, including: (A) a step of mixing a silicon precursor, an aluminum precursor, a phosphorus precursor, a structure directing agent and water; a step of (B) adding phenylphosphonic acid, carbon black or a mixture thereof to the mixture prepared in the step (A) and mixing the same; a step of (C) crystallizing the mixture prepared in the step (B) by heat-treating the same; and a step of (D) calcining the crystallization product, and utilization of the prepared multi-level pore zeolite as a catalyst for hydroisomerization of normal paraffins. The catalyst exhibits improved isoparaffin yield when it is used as a catalyst for hydroisomerization of normal paraffins such as diesel or lube base oil by supporting an active metal component because residence time of reactants and products in the zeolite crystals are decreased due to mesopores and the proportion of external acid sites to total acid sites is low.
    Type: Application
    Filed: June 26, 2014
    Publication date: June 8, 2017
    Applicants: S-OIL CORPORATION, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chan-Ju SONG, Sang Cheol PAIK, Sang-Goo LEE, Min Kee CHOI, Myoung Yeob KIM
  • Publication number: 20170120222
    Abstract: Disclosed are a complex oxide catalyst for dehydrogenation, a method of preparing the same, and use thereof, wherein the catalyst includes a first transition metal selected from the group consisting of gallium, vanadium, chromium, manganese, molybdenum, and zinc, a hydrogen-activating metal including at least one selected from the group consisting of Groups 8, 9, 10, and 11 elements in a periodic table, and alumina, the amount of the first transition metal being 0.1 wt % to 20 wt %, the amount of the hydrogen-activating metal being 0.01 wt % to 2 wt %, based on the amount of the alumina, the first transition metal being loaded on the alumina, and the hydrogen-activating metal being surrounded by the alumina.
    Type: Application
    Filed: October 31, 2016
    Publication date: May 4, 2017
    Inventors: Tae Jin KIM, Chang Q LEE, Young Eun CHEON, Ju Hwan IM, Min Kee CHOI
  • Publication number: 20170116072
    Abstract: The present invention relates to to an IEC 61850 information-based agent system for intelligent system management by a digital substation and an operation method therefor. To this end, an operating system-side agent device for sharing switch information, which is used in automatic recovery of a digital substation, between an operating system and an intelligent electronic device (IED) in the digital substation, the device including: a request unit requesting the switch information from an intelligent electronic device-side agent device mounted in the intelligent electronic device (IED); and a communication unit receiving the switch information from the intelligent electronic device-side agent device, the switch information being collected by the intelligent electronic device-side agent device, wherein the operating system-side agent device is provided as a module, and is mounted in the operating system.
    Type: Application
    Filed: June 1, 2015
    Publication date: April 27, 2017
    Inventors: Nam-Ho LEE, Byung-Tae JANG, Yong-Ho AN, Jeong-Yeol HAN, You-Jin LEE, Jong-Kee CHOI, Seok-Kon KIM
  • Publication number: 20160323275
    Abstract: The present invention discloses a method for a Mobile Mobility Entity (MME) to carry out mutual authentication with a group of Machine Type Communication (MTC) devices. The method can comprise receiving group-related authentication data from a leader; transmitting the received information and Serving Network-ID, an identification number of the MME, to a HSS; receiving from the HSS a random value, an Authentication Vector and information of group members; broadcasting the random value and the first authentication token to the MTC device group based on information received from the HSS; receiving from the leader a leader authentication response that the leader generates by using a local master key value calculated by using the first secret key value; authenticating the leader by comparing the leader authentication response with a leader authentication value received from the HSS; and authenticating members within the MTC device group according to the leader authentication result.
    Type: Application
    Filed: August 19, 2015
    Publication date: November 3, 2016
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoung Kee CHOI, Dae Sung CHOI, Young Jo KIM, Ji Young PARK, Dong Hyuk SHIN, Joon Woo YU
  • Publication number: 20160166361
    Abstract: Provided is a metal bite strip used for producing an occlusal splint, the metal bite strip including: a first wax layer as a base layer; a first aluminum metal strip and a second aluminum metal strip formed to be spaced apart from each other on the first wax layer and formed by stacking a plurality of aluminum metal bite sheets; and a second wax layer and a third wax layer formed on the first aluminum metal strip and the second aluminum metal strip, respectively.
    Type: Application
    Filed: October 14, 2015
    Publication date: June 16, 2016
    Inventor: Byung Kee CHOI
  • Publication number: 20160051971
    Abstract: This invention relates to a hydrogen spillover-based catalyst and use thereof, wherein a hydrogen activation metal cluster is dispersed in the form of being encapsulated in a crystalline or amorphous aluminosilicate matrix which is partially or fully structurally collapsed zeolite, thereby exhibiting high hydroprocessing or dehydrogenation activity and suppressed C—C hydrogenolysis activity.
    Type: Application
    Filed: April 22, 2014
    Publication date: February 25, 2016
    Inventors: Min Kee CHOI, Ju Hwan IM, Do Woan KIM, Do Kyoung KIM, Tae Jin KIM, Seung Hoon OH, Tae Hong SEOK
  • Patent number: 9100662
    Abstract: A system and method for adaptive motion filtering to improve subpel motion prediction efficiency of interframe motion compensated video coding is described. The technique uses a codebook approach that is efficient in search complexity to look-up best motion filter set from a pre-calculated codebook of motion filter coefficient set. In some embodiments, the search complexity is further reduced by partitioning the complete codebook into a small base codebook and a larger virtual codebook, such that the main calculations for search only need to be performed on the base codebook.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: August 4, 2015
    Assignee: Intel Corporation
    Inventors: Atul Puri, Daniel Socek, Chang-Kee Choi
  • Publication number: 20150193558
    Abstract: The present invention relates to a method and device for generating an engineering topology of a digital substation. The method may include: generating, by a single line diagram generation module, a single line diagram of the digital substation based on input information regarding a plurality of substation component devices and connection relations therebetween; converting, by a topology conversion module, the single line diagram of the digital substation into an engineering topology conforming to international standards by use of conversion conditions stored in a topology component management module; verifying, by a topology verification module, whether the engineering topology is suitable for the digital substation based on the international standards; and generating, by an international standard file generation module, a single line diagram engineering file of the digital substation as a system specification description (SSS) by use of the verified engineering topology.
    Type: Application
    Filed: March 19, 2013
    Publication date: July 9, 2015
    Applicant: KOREA ELECTRIC POWER CORPORATION
    Inventors: Byung Tae Jang, Nam Ho Lee, Yong Ho An, Jong Kee Choi, Jeong Yeol Han, You Jin Lee, Eung Bo Shim, Dong Il Lee
  • Publication number: 20150078448
    Abstract: A system and method for adaptive motion filtering to improve subpel motion prediction efficiency of interframe motion compensated video coding is described. The technique uses a codebook approach that is efficient in search complexity to look-up best motion filter set from a pre-calculated codebook of motion filter coefficient set. In some embodiments, the search complexity is further reduced by partitioning the complete codebook into a small base codebook and a larger virtual codebook, such that the main calculations for search only need to be performed on the base codebook.
    Type: Application
    Filed: May 5, 2014
    Publication date: March 19, 2015
    Inventors: Atul PURI, Daniel SOCEK, Chang-Kee CHOI
  • Publication number: 20140362922
    Abstract: Techniques related to content adaptive prediction and entropy coding of motion vectors are described.
    Type: Application
    Filed: July 17, 2014
    Publication date: December 11, 2014
    Inventors: Atul Puri, Daniel Socek, Chang Kee Choi
  • Patent number: 8850205
    Abstract: A method of and an authentication server for distributing a key are disclosed. According to an embodiment of the present invention, the method of distributing a key, which is distributed by an authentication server connected with wireless terminals through a communication network, for encrypting and decrypting data in accordance with providing a service can include: obtaining characteristic information by decrypting encrypted characteristic information that has been received from each of n number of wireless terminals; generating a random key; generating a group key used for encrypting and decrypting data in accordance with providing a service; and generating a distribution key by using the random key, the group key and the characteristic information, and transmitting the distribution key to each wireless terminal.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: September 30, 2014
    Assignee: Sungyunkwan University Foundation for Corporate Collaboration
    Inventors: Hyoung-Kee Choi, Jung-Yoon Kim, Do-Hyun Kwon, Eun-Young Lee, In-Hwan Kim, Se-Hwa Song
  • Patent number: 8761245
    Abstract: A system and method for adaptive motion filtering to improve subpel motion prediction efficiency of interframe motion compensated video coding is described. The technique uses a codebook approach that is efficient in search complexity to look-up best motion filter set from a pre-calculated codebook of motion filter coefficient set. In some embodiments, the search complexity is further reduced by partitioning the complete codebook into a small base codebook and a larger virtual codebook, such that the main calculations for search only need to be performed on the base codebook.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: June 24, 2014
    Assignee: Intel Corporation
    Inventors: Atul Puri, Daniel Socek, Chang-Kee Choi
  • Patent number: 8262284
    Abstract: The present invention relates to a simulation test system for thermal impact ageing of a power transmission insulator which simulation tests an influence of a forest fire on the power transmission insulator.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: September 11, 2012
    Assignee: Korea Electric Power Corporation
    Inventors: Won-Kyo Lee, In-Hyuk Choi, Jong-Kee Choi, Kap-Cheol Hwang