Patents by Inventor David T. Chun

David T. Chun 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: 7785376
    Abstract: A method to bind compounds (e.g., antibiotics) to natural or synthetic yarn or fabric, involving reacting the compounds with cyanuric chloride, a hydroxide base (e.g., NaOH), and deionized water to form reactive compounds; forming a dyebath composed of the reactive compounds, at least one nonioinic, cationic or anionic surfactant, salt (e.g., sodium sulfate), deionized water, and natural or synthetic yarn or fabric; heating the dyebath (generally for about 1 to about 100 minutes at a temperature of about 25° to about 100° C.); adding a hydroxide base (e.g., NaOH) to the dyebath and heating (generally for about 1 to about 100 at a temperature of about 80° to about 100° C.); rinsing the natural or synthetic yarn or fabric; placing the natural or synthetic yarn or fabric in deionized water and heating (generally for about 1 to about 100 minutes at a temperature of about 25° to about 100° C.); rinsing the natural or synthetic yarn or fabric; and drying the natural or synthetic yarn or fabric.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: August 31, 2010
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: David T. Chun, Gary R. Gamble