Patents by Inventor John C. C. Chang

John C. C. Chang 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).

  • Textile treatments
    Patent number: 4426476
    Abstract: Textiles are rendered water and oil resistant by contacting them with a composition containing water-insoluble fluoroaliphatic radical- and aliphatic chlorine-containing ester and water-insoluble fluoroaliphatic radical-containing polymer.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: January 17, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John C. C. Chang