Patents by Inventor Yoon-Jong Cha

Yoon-Jong Cha 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: 10640646
    Abstract: Provided herein is a flame retardant polyurethane (PU) artificial leather and a method for manufacturing the flame retardant polyurethane (PU) artificial leather, wherein the method may include preparing a microfiber nonwoven fabric material, consecutively forming a polyurethane coating layer and an adhesive layer on one surface of a release paper, and combining the nonwoven fabric material and the release paper.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: May 5, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Baiksan Co., Ltd.
    Inventors: Hye-Na Hwang, Sung-Joon Hong, Han-Seok Kim, Kyung-Nam Kim, Seong-Ho Cho, Yoon-Jong Cha, Sung-Deuk An
  • Publication number: 20180237637
    Abstract: Provided herein is a flame retardant polyurethane (PU) artificial leather and a method for manufacturing the flame retardant polyurethane (PU) artificial leather, wherein the method may include preparing a microfiber nonwoven fabric material, consecutively forming a polyurethane coating layer and an adhesive layer on one surface of a release paper, and combining the nonwoven fabric material and the release paper.
    Type: Application
    Filed: December 29, 2017
    Publication date: August 23, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hye-Na Hwang, Sung-Joon Hong, Han-Seok Kim, Kyung-Nam Kim, Seong-Ho Cho, Yoon-Jong Cha, Sung-Deuk An
  • Publication number: 20070129456
    Abstract: The present invention heats to melt a urethane prepolymer (A ingredient) including a hydroxyl (—OH) functional group in a liquid state or a semi-solid state at room temperature as itself or temperature at 30° C. to 80° C., an isocyanate compound (B ingredient) for reacting with a hydroxyl functional group of urethane prepolymer, a mixture (C ingredient) of a hardening catalyst by cross-link, a pores formation assistance catalyst, a silicone surfactant, and an additive is added by fixed quantity and agitation at high speed to mix. Thus formed porous material of cream shape is using by knife coating process. Thus, the purpose of the present invention is manufacturing a solvent-less urethane porous foamed material fabricating synthetic leather as uniformity of micro pores and good mechanical properties of high strength.
    Type: Application
    Filed: February 6, 2006
    Publication date: June 7, 2007
    Inventors: Yoon-Jong Cha, Jun-Wan Im, Sung-Duck Ahn
  • Publication number: 20060022368
    Abstract: To provide a method of fabricating a polyurethane foam with micro pores, and a polishing pad therefrom, the method including steps of (a) adding a nonionic surfactant into at least one of a first ingredient including an isocyanate group-containing compound and a second ingredient including an active hydrogen group-containing compound, (b) agitating and mixing the mixture of the first ingredient and the second ingredient while adding a non-reactive gas thereto, (c) discharging the mixture out of a container at a predetermined rate, and (d) injecting the discharged mixture into a mold so as to form a mold body into a predetermined shape.
    Type: Application
    Filed: November 18, 2003
    Publication date: February 2, 2006
    Inventors: Kyu-Don Lee, Yoon-Jong Cha