Patents by Inventor Kyu-Wan Lee

Kyu-Wan 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).

  • Patent number: 11941845
    Abstract: An apparatus for estimating a camera pose according to an embodiment of the present disclosure includes a similar image searcher, a clusterer, and an estimator. The similar image searcher searches for a plurality of images similar to an input image, from among a plurality of previously-stored images, based on the input image. The clusterer creates a cluster including at least some similar images meeting predetermined conditions, from among the plurality of similar images, based on viewpoint data tagged to each of the plurality of similar images. The estimator estimates a pose of a camera that has generated the input image, based on the cluster.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 26, 2024
    Assignee: MAXST CO., LTD.
    Inventors: Sang Rok Kim, Kyu Sung Cho, Jae Wan Park, Tae Yun Son, Hyung Min Lee
  • Patent number: 10518805
    Abstract: A knuckle apparatus for a vehicle suspension system, may include a bearing device having an assembly end portion protruding and extending from a center thereof; and a knuckle device having a plurality of brackets connected to a suspension system component, the brackets being coupled through the assembly end portion.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 31, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Min Lim, Jae Kil Lee, Kyu Wan Lee, Patrick Alain Hasselt
  • Publication number: 20180265126
    Abstract: A knuckle apparatus for a vehicle suspension system, may include a bearing device having an assembly end portion protruding and extending from a center thereof; and a knuckle device having a plurality of brackets connected to a suspension system component, the brackets being coupled through the assembly end portion.
    Type: Application
    Filed: September 27, 2017
    Publication date: September 20, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Min LIM, Jae Kil Lee, Kyu Wan Lee, Patrick Alain Hasselt
  • Patent number: 7157404
    Abstract: The present invention relates to a catalyst for preparing hydrocarbons of carbon dioxide and more particularly, the Fe—Cu—K/?—Al2O3 catalyst prepared by impregnation which enables producing hydrocarbons in high yield for more than 2000 hours due to its excellent activity and stability.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: January 2, 2007
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Ki-Won Jun, Jin-Soo Hwang, Kyu-Wan Lee, Myoung-Jae Choi
  • Patent number: 6248795
    Abstract: This invention relates to the process of preparing from carbon dioxide a mixture of dimethyl ether and methanol which are useful as clean fuel or raw materials in the chemical industry. More particularly, this invention relates to the process of preparing dimethyl ether and methanol in high yield without by-products such as hydrocarbons by means of chemical conversion of carbon dioxide, which is a major pollutant of the global environment, in the presence of a mixture of catalysts comprising Cu/ZnO-based catalyst and Y-type zeolite catalyst having a strong acidity with the pKa value of −6.0-−3.0.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: June 19, 2001
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Ki Won Jun, Kyu Wan Lee
  • Patent number: 6242380
    Abstract: A process for preparing supported nickel catalyst consisting of supporting nickel or metal salt of nickel, alkali metal, alkaline earth metal having low melting point on silicon and aluminum-containing support having high surface area such as zeolite, silica and alumina as an oxide by melting effectively nickel or metal salt of nickel, alkali metal and alkaline earth metal having low melting point is disclosed. This process is characterized in that the supported nickel catalyst prepared by the present invention can be used in reforming reaction of hydrocarbons by using carbon dioxide, steam and oxygen as an oxidant. Metal salts used in the preparation of supported nickel catalyst is generally nitrate, chloride, acetate and carbonate having low melting point of 500° C. or less. The contents of nickel, alkali metal and alkaline earth metal of the catalyst are 1 to 20% by weight, 10% by weight or less and 20% by weight or less, respectively.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 5, 2001
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Sang-Eon Park, Jong-San Chang, Kyu-Wan Lee
  • Patent number: 6121405
    Abstract: A method for preparing a high-heat-resistant-epoxy-resin composition which comprises adding, as catalytic curing agent, a pyrazinium salt having a benzyl group to difunctional and multifunctional epoxy resin and thermoset resin having a similar structure. The epoxy-resin composition obtained by the present invention is excellent in its impregnating property, processability, impact resistance, drug resistance, electric-insulating property, and adhesiveness.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: September 19, 2000
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Jae-Rock Lee, Soon-Jin Park, Sang-Bong Lee, Kyu-Wan Lee
  • Patent number: 6075170
    Abstract: This invention relates to a process for preparing cyclohexanol and cyclohexanone, in particular, to a process for preparing cyclohexanol and cyclohexanone by selectively oxidizing cyclohexane with Fe/Pd catalyst in a flow of hydrogen and oxygen gases in the mixture of acetone and acetic acid.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: June 13, 2000
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Ki Won Jun, Sang Bum Kim, Seong Bo Kim, Kyu Wan Lee
  • Patent number: 5952540
    Abstract: This invention relates to a process for preparing hydrocarbons, in particular hydrogenation of carbon dioxide over Fe-K/Al.sub.2 O.sub.3 catalyst, which is reduced in hydrogen and activated in the mixture of carbon dioxide and hydrogen.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: September 14, 1999
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Kyu Wan Lee, Myoung Jae Choi, Ki Won Jun, Pyoung Ho Choi, Soo Jae Lee
  • Patent number: 5855815
    Abstract: A process for producing a synthesis gas having carbon monoxide and hydrogen from the reduction of carbon dioxide with natural gas or lower hydrocarbons having methane as a main component and oxygen and steam over catalyst composed of nickel and, as promotors, alkali metal and alkaline earth metal component supported on silicon-containing support such as zeolite, silica, silicate and silica-alumina which are stable under reaction condition is disclosed. This process characterized in that the catalytic activity and performance property are improved by supporting alkali metal, alkaline earth metal and nickel oxide from metal salts having low melting point uniformly on silicon-containing support having high surface area by solid-state reaction. The amounts of adding alkali metal, alkaline earth metal and nickel are 0.01 to 10% by weight, 1 to 20% by weight and 1 to 20% by weight, respectively. The present invention is conducted in the temperature range from 600.degree. C. to 1000 .degree. C.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: January 5, 1999
    Assignee: Korea Research Institute of Chemical Tech.
    Inventors: Sang-Eon Park, Jong-San Chang, Kyu-Wan Lee
  • Patent number: 5208392
    Abstract: The present invention provides a novel Fe-Pd catalyst prepared by impregnating, either together or respectively, an iron source compound and a palladium source compound onto a carrier selected from the group consisting of silica, alumina and silica-alumina, and drying and calcining said Fe-Pd impregnated carrier in a flow of air or H.sub.2 /N.sub.2 ; and a method for preparing a mixture of cyclohexanol and cyclohexanone by selectively oxidizing cyclohexane in a reaction medium provided with hydrogen and oxygen gases in the presence of said Fe-Pd catalyst.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: May 4, 1993
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Kyu-Wan Lee, Ki-Won Jun, Eun-Kyung Shim