Patents by Inventor Helmut C. Mueller

Helmut C. Mueller 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).

  • Process for treating tufted pile fabric
    Patent number: 4301577
    Abstract: A process for erecting the pile and increasing the yarn bulk of dyed or printed carpeting which has been bent, matted and crushed during processing. The carpeting is heated in a steam chamber to a temperature above the highest processing temperature and in the range of 170.degree.-212.degree. F., to override the yarn memory. A beater bar within the steam chamber then beats the carpet to reduce the bending, matting and crushing of the pile.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: November 24, 1981
    Assignee: Bigelow-Sanford, Inc.
    Inventors: Helmut C. Mueller, Harry G. Gallagher