Patents by Inventor Steven Peter Pardini

Steven Peter Pardini 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).

  • Dyeable spandex
    Patent number: 7838617
    Abstract: Commercial spandex can be prepared with greater efficiency, improved consistency and at lower costs from a high-solids content polyurethaneurea polymer solution. The polyurethaneurea is prepared using a combination of 4,4?-MDI and 2,4?-MDI, and an amount of chain extenders and chain terminators such that the polymer solution, prior to spinning, is highly soluble and has an appropriate pre-spun IV and primary amine content. Such spandex fibers, and the fabrics and garments comprising them, have good dyeability and colorfastness, as well as other desirable characteristics.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: November 23, 2010
    Assignee: INVISTA North America s.àr.l.
    Inventors: Nathan E. Houser, Gordon W. Selling, Beverly Jean Selle, Steven Peter Pardini, Robert Dewhurst, Elizabeth Todd Singewald