Patents by Inventor John Harbison

John Harbison 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).

  • Multicolor package dyeing
    Patent number: 4718917
    Abstract: A process for package dyeing yarn is disclosed. Yarn is wound on a tube having perforations along a portion of its length. The density of the yarn package is such that when dye liquor is circulated from the interior of the tube, through the perforations and then through the yarn, its path of flow is different from when dye is circulated in the opposite direction. By circulating and absorbing dyes of different colors in each direction, multicolored dyeing of the yarn is achieved.
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: January 12, 1988
    Assignee: West Point Pepperell, Inc.
    Inventor: John Harbison