Patents by Inventor Eric C.S. Lee

Eric C.S. 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).

  • CATIONIC CELLULOSIC FIBERS AND METHODS OF MAKING AND USING THE SAME
    Publication number: 20250122667
    Abstract: The present invention relates to cationic cellulosic fibers that are useful for preparing dyeable fabrics and garments, for example, garments that have a mélange effect and/or a denim-like in appearance.
    Type: Application
    Filed: October 11, 2024
    Publication date: April 17, 2025
    Applicant: CbisCo Global, LLC
    Inventors: Terry SIEGEL, Eric C.S. LEE
  • Energy efficient dyeing method
    Patent number: 5833720
    Abstract: A method of dyeing cellulosic textile fibers with a dye which normally requires an exhaust salt. The method includes the step of forming a dye site, which includes the steps of treating the fibers with a dilute alkali solution containing an epoxy ammonium compound having an epoxy-reactive group which will permanently attach to cellulose hydroxyl groups to form a permanent cationic dye site, rinsing the fibers to remove any excess epoxy ammonium compound and at least some of the dilute alkali solution, and neutralizing any remaining alkali solution with a mild acid.The method also includes the steps of dyeing the fibers in a dyebath containing a bifunctional reactive dye without a salt and at a temperature at or below 30.degree. C. (86.degree. F.) to dye exhaustion.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: November 10, 1998
    Inventors: Johnny Joe Kent, Eric C.S. Lee, Sui-Fung Yu