Patents by Inventor Seog C. You

Seog C. You 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).

  • Aromatic polyamide pulp and a process for the preparation thereof
    Patent number: 5324811
    Abstract: A process for the preparation of aromatic polyamide pulp having excellent properties comprising:a) preparing a polymerization solvent by adding a Lewis acid type compound to an amide type organic solvent, an urea type organic solvent or a mixture thereof;b) obtaining an anisotropic liquid crystalline polymer solution prior to gelation by dissolving an aromatic diamine in the prepared polymerization solvent and adding an aromatic diacid chloride to the solution, and effecting the polymerization thereof;c) maintaining the polymer solution at a predetermined temperature for a predetermined period; andd) separating the polymerization solvent and pulverizing the polymer by pulping machine.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: June 28, 1994
    Assignee: Kolon Industries, Inc.
    Inventors: Seog C. You, Young H. Park, Sang Y. Oh, Chang S. Ji