Patents by Inventor Heung Sik Kim

Heung Sik Kim 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: 20220098378
    Abstract: The embodiments relate to a polyamide-based film excellent in optical properties such as transmittance, haze, and yellow index and mechanical properties such as modulus and thickness uniformity, to a process for preparing the same, and to a cover window and a display device comprising the same. The polyamide-based film comprises a polyamide-based polymer and has an XRD pattern comprising a first peak whose highest point is located in a section where 2? is 14° to 16°.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 31, 2022
    Inventors: Han Jun KIM, Jin Woo LEE, Dae Seong OH, Sun Hwan KIM, Heung Sik KIM, Joo Young JUNG
  • Patent number: 11001039
    Abstract: A resin film for laminated glass, laminated glass including the resin film, and a process for manufacturing the laminated glass are disclosed. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 ?m and a maximum static friction coefficient at 20° C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35° C. is 40 to 310 ?m/N.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: May 11, 2021
    Assignee: SKC CO., LTD.
    Inventors: Kyu-Hun Kim, Jewon Yeon, Sung Jin Chung, Heung Sik Kim, Hyejin Kim, Hak Soo Lee
  • Publication number: 20200407519
    Abstract: The polymer film according to an embodiment comprises at least one polymer resin selected from the group consisting of a polyamide-based resin, a polyimide-based resin, and a polyamide-imide-based resin, and has a haze of 0.6% or less and an in-plane retardation within a specific range for each wavelength band in the visible light region. The polymer film, which has an in-plane retardation within a specific range for each wavelength band in the visible light region, is excellent in transparency and optical properties, and it can remarkably reduce the rainbow phenomenon and improve the reflection appearance.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Jung Hee KI, Sunhwan KIM, Dae Seong OH, Jin Woo LEE, Sang Hun CHOI, Han Jun KIM, Heung Sik KIM
  • Publication number: 20200407522
    Abstract: Embodiments relate to a polyamide-based film that is colorless and transparent, is excellent in mechanical properties and optical properties, has a wide angle of view by securing at least a certain level of luminance at various angles, and, in particular, has gloss characteristics similar to those of glass, a process for preparing the same, and a cover window comprising the same. The polyamide-based film comprises a polyamide-based polymer, wherein when the polyamide-based film is placed on a surface light source, light is irradiated from the surface light source, and the luminance value (L0) measured in the normal direction of the surface light source is 100%, the luminance value (L50) measured in the direction of 50° from the normal direction of the surface light source is 25% or more.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Sang Hun Choi, Jin Woo Lee, Dae Seong Oh, Jung Hee Ki, Sunhwan Kim, Han Jun Kim, Heung Sik Kim
  • Publication number: 20200094530
    Abstract: A resin film for laminated glass, laminated glass including the resin film, and a process for manufacturing the laminated glass are disclosed. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 ?m and a maximum static friction coefficient at 20° C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35° C. is 40 to 310 ?m/N.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 26, 2020
    Applicant: SKC CO., LTD.
    Inventors: Kyu-Hun Kim, Jewon Yeon, Sung Jin Chung, Heung Sik Kim, Hyejin Kim, Hak Soo Lee
  • Patent number: 10562277
    Abstract: Embodiments relate to a resin film for laminated glass, laminated glass comprising the resin film, and a process for manufacturing the laminated glass. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 ?m and a maximum static friction coefficient at 20° C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35° C. is 40 to 310 ?m/N.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: February 18, 2020
    Assignee: SKC CO., LTD.
    Inventors: Kyu-Hun Kim, Jewon Yeon, Sung Jin Chung, Heung Sik Kim, Hyejin Kim, Hak Soo Lee
  • Publication number: 20180361714
    Abstract: Embodiments relate to a resin film for laminated glass, laminated glass comprising the resin film, and a process for manufacturing the laminated glass. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 ?m and a maximum static friction coefficient at 20° C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35° C. is 40 to 310 ?m/N.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 20, 2018
    Applicant: SKC CO., LTD.
    Inventors: Kyu-Hun KIM, Jewon YEON, Sung Jin CHUNG, Heung Sik KIM, Hyejin KIM, Hak Soo LEE
  • Patent number: 7154076
    Abstract: An image sensor with a high dynamic range is provided. The image sensor includes a semiconductor substrate, a plurality of light-receiving elements formed on the semiconductor substrate, and light-shield films formed on upper ends of some of the light-receiving elements to partially block light incident upon each of the some light-receiving elements. Hence, an image sensing device including the image sensor can detect an accurate image regardless of whether the environment is bright or dark.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: December 26, 2006
    Assignee: C'est Image, Inc.
    Inventors: Heung Sik Kim, Yong Ahn Ha, Ui Chol Yl, Jin Heon Kim, Woo Hyun Kwon, Jong Sun Won, Hak Dae Lee, Seung Hyun Cha, Seung Chul Lee, Tae Sun Shin