Patents by Inventor Hyung-Chul Choi

Hyung-Chul 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).

  • Publication number: 20240150331
    Abstract: The present invention relates to a pidolate salt and malate salt of a compound represented by a formula 1 with an excellent liquid-phase stability, solid-phase stability, water solubility, precipitation stability and hygroscopicity all together as a compound for preventing and treating diseases mediated by an acid pump antagonistic activity, as well as a method for preparing the same.
    Type: Application
    Filed: January 16, 2024
    Publication date: May 9, 2024
    Applicant: HK INNO.N CORPORATION
    Inventors: Eun Sun KIM, Min Kyoung LEE, Sung Ah LEE, Kwang Do CHOI, Jae Sun KIM, Hyung Chul YOO
  • Patent number: 11912690
    Abstract: The present invention relates to a pidolate salt and malate salt of a compound represented by a formula 1 with an excellent liquid-phase stability, solid-phase stability, water solubility, precipitation stability and hygroscopicity all together as a compound for preventing and treating diseases mediated by an acid pump antagonistic activity, as well as a method for preparing the same.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: February 27, 2024
    Assignee: HK INNO.N CORPORATION
    Inventors: Eun Sun Kim, Min Kyoung Lee, Sung Ah Lee, Kwang Do Choi, Jae Sun Kim, Hyung Chul Yoo
  • Patent number: 11434959
    Abstract: A propeller shaft for a vehicle in which a tube yoke is connected to a main tube via an adapter and tapered splines are formed at the contact regions between a tube yoke and the main tube to transmit the power output from a transmission to a rear wheel. The tube yoke and the main tube are displaced relative to each other at the tapered splines to break the adapter. The tube yoke and the main tube are thus separated from each other by virtue of the breakage of the adapter.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: September 6, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Hyung Chul Choi
  • Publication number: 20210332859
    Abstract: A propeller shaft for a vehicle is provided in which a tube yoke is connected to a main tube via an adapter and tapered splines are formed at the contact regions between a tube yoke and the main tube to transmit the power output from a transmission to a rear wheel. The tube yoke and the main tube are displaced relative to each other at the tapered splines to break the adapter. The tube yoke and the main tube are thus separated from each other by virtue of the breakage of the adapter to efficiently absorb impact energy.
    Type: Application
    Filed: September 22, 2020
    Publication date: October 28, 2021
    Inventor: Hyung Chul Choi
  • Patent number: 7303809
    Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 4, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
  • Patent number: 6815056
    Abstract: An antireflection coating comprises one or more inorganic antireflection layers (typically metal oxide or silica layers) and a polymer layer cured in situ, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 to 700 nm and a thickness of from about 20 to about 200 nm. The polymer layer provides good scratch and fingerprint protection, and also enables the thicknesses of the inorganic antireflection layers to be reduced, thereby reducing the cost of the coating.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: November 9, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Robert L. Jones, Pradnya V. Nagarkar, William K. Smyth, Xiaojia Z. Wang
  • Patent number: 6761788
    Abstract: There is described a nanoporous receiver element for use in thermal mass transfer imaging applications. The receiver element comprises a substrate carrying an image-receiving layer comprising particulate material and a binder material. The substrate may comprise a material having a compressibility of at least 1% under a pressure of 1 Newton per mm2 (1 MPa). Optionally, there may be provided, between the substrate and the nanoporous receiving layer, a layer having a thickness of less than about 50 &mgr;m which is comprised entirely of a material having a compressibility of less than about 1% under a pressure of 1 MPa. Alternatively, the substrate may comprise only the material having a compressibility of less than about 1% under a pressure of 1 MPa, provided that the thickness of the substrate does not exceed about 50 &mgr;m.
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: July 13, 2004
    Assignee: Polaroid Corporation
    Inventors: Anemarie DeYoung, James A. Foley, Alfredo G. Kniazzeh, Edward P. Lindholm, Stephen J. Telfer, William T. Vetterling, Michael S. Viola, Hyung-Chul Choi
  • Patent number: 6632513
    Abstract: An article includes an antireflection composite material, a substrate, and an inorganic layer deposited onto the substrate. The inorganic layer has a thickness of from about 1 nm to about 10 nm. The article includes a polymer layer in contact with the inorganic layer to form an outer surface of the antireflection composite material. The polymer layer has a thickness of from about 70 nm to about 120 nm.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: October 14, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung Chul Choi, Edward P. Lindholm, William K. Smyth, Pradnya V. Nagarkar
  • Publication number: 20030113518
    Abstract: There is described a nanoporous receiver element for use in thermal mass transfer imaging applications. The receiver element comprises a substrate carrying an image-receiving layer comprising particulate material and a binder material. The substrate may comprise a material having a compressibility of at least 1% under a pressure of 1 Newton per mm2 (1 MPa). Optionally, there may be provided, between the substrate and the nanoporous receiving layer, a layer having a thickness of less than about 50 &mgr;m which is comprised entirely of a material having a compressibility of less than about 1% under a pressure of 1 MPa. Alternatively, the substrate may comprise only the material having a compressibility of less than about 1% under a pressure of 1 MPa, provided that the thickness of the substrate does not exceed about 50 &mgr;m.
    Type: Application
    Filed: May 30, 2002
    Publication date: June 19, 2003
    Inventors: Anemarie DeYoung, James A. Foley, Alfredo G. Kniazzeh, Edward P. Lindholm, Stephen J. Telfer, William T. Vetterling, Michael S. Viola, Hyung-Chul Choi
  • Publication number: 20030021972
    Abstract: An antireflection coating comprises one or more inorganic antireflection layers (typically metal oxide or silica layers) and a polymer layer cured in situ, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 to 700 nm and a thickness of from about 20 to about 200 nm. The polymer layer provides good scratch and fingerprint protection, and also enables the thicknesses of the inorganic antireflection layers to be reduced, thereby reducing the cost of the coating.
    Type: Application
    Filed: September 23, 2002
    Publication date: January 30, 2003
    Inventors: Hyung-Chul Choi, Robert L. Jones, Pradnya V. Nagarkar, William K. Smyth, Xiaojia Z. Wang
  • Patent number: 6493015
    Abstract: A thermal transfer recording system wherein an area of a thermal transfer imaging medium is heated imagewise while in contact only with a thermal printing head and the imaged area of the thermal transfer recording medium subsequently transferred to a receiver material.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: December 10, 2002
    Assignee: Polaroid Corporation
    Inventors: Jayprakash C. Bhatt, Hyung-Chul Choi, F. Richard Cottrell, Anemarie De Young
  • Publication number: 20020155265
    Abstract: An antireflection coating comprises one or more inorganic antireflection layers (typically metal oxide or silica layers) and a polymer layer cured in situ, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 to 700 nm and a thickness of from about 20 to about 200 nm. The polymer layer provides good scratch and fingerprint protection, and also enables the thicknesses of the inorganic antireflection layers to be reduced, thereby reducing the cost of the coating.
    Type: Application
    Filed: February 19, 1998
    Publication date: October 24, 2002
    Inventors: HYUNG-CHUL CHOI, ROBERT L. JONES, PRADNYA V NAGARKAR, WILLIAM K SMYTH, XIAOJIA Z WANG, YEE HO CHIA
  • Patent number: 6464822
    Abstract: An antireflection coating includes one or more inorganic antireflection layers (typically metal oxide or silica layers) and a polymer layer cured in situ, the polymer layer having a refractive index not greater than about 1.53 over the wavelength range of 400 to 700 nm and a thickness of from about 20 to about 200 nm. The polymer layer provides good scratch and fingerprint protection, and also enables the thicknesses of the inorganic antireflection layers to be reduced, thereby reducing the cost of the coating.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: October 15, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Robert L. Jones, Pradnya V. Nagarkar, William K. Smyth, Xiaojia Z. Wang, Yee Ho Chia
  • Publication number: 20020140798
    Abstract: A thermal transfer recording system wherein an area of a thermal transfer imaging medium is heated imagewise while in contact only with a thermal printing head and the imaged area of the thermal transfer recording medium subsequently transferred to a receiver material.
    Type: Application
    Filed: March 29, 2001
    Publication date: October 3, 2002
    Inventors: Jayprakash C. Bhatt, Hyung-Chul Choi, F. Richard Cottrell, Anemarie DeYoung
  • Publication number: 20020114901
    Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.
    Type: Application
    Filed: September 17, 2001
    Publication date: August 22, 2002
    Inventors: Hyung-Chul Choi, Yi Zhi Chu, Linda S. Heath, William K. Smyth
  • Patent number: 6379509
    Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: April 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Yi Zhu Chu, Linda S. Heath, William K. Smyth
  • Patent number: 6379788
    Abstract: An antireflection film comprises a transparent substrate carrying on one surface a polymeric antireflection layer, this antireflection layer having a refractive index at least about 0.02 lower than that of the substrate and being formed from a cured polymer comprising repeating units derived from a fluoroalkene, an alkyl acrylate or methacrylate and a polyfunctional acrylate monomer. No inorganic antireflection layer is present between the substrate and the polymeric antireflection layer.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: April 30, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Hyung-Chul Choi, Robert L. Jones, Pradnya V. Nagarkar, William K. Smyth
  • Publication number: 20010050222
    Abstract: Substantially transparent electrodes are formed upon a substrate by forming on the substrate, in order, a high index layer, a metallic conductive layer, and a conductive or semi-conductive top layer; and patterning the top layer and the conductive layer, preferably by laser ablation, to form a plurality of discrete electrodes from the metallic conductive layer. Conductors can be attached directly to the top layer, without requiring removal of this layer to expose the metallic conductive layer. The high index layer, conductive layer and top layer can all be formed by sputtering or similar processes which do not require high temperatures, so that plastic substrates can be used. The electrodes can be used, for example, in flat panel displays and in touch screen displays.
    Type: Application
    Filed: January 20, 1998
    Publication date: December 13, 2001
    Inventors: HYUNG-CHUL CHOI, YI ZHI CHU, LINDA S HEATH, WILLIAM K SMYTH
  • Publication number: 20010049024
    Abstract: An antireflection film comprises a transparent substrate carrying on one surface a polymeric antireflection layer, this antireflection layer having a refractive index at least about 0.02 lower than that of the substrate and being formed from a cured polymer comprising repeating units derived from a fluoroalkene, an alkyl acrylate or methacrylate and a polyfunctional acrylate monomer. No inorganic antireflection layer is present between the substrate and the polymeric antireflection layer.
    Type: Application
    Filed: November 20, 1998
    Publication date: December 6, 2001
    Inventors: HYUNG-CHUL CHOI, ROBERT L. JONES, PRADNYA V. NAGARKAR, WILLIAM K. SMYTH