Patents by Inventor David Elton Bidstrup

David Elton Bidstrup 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).

  • Fluoropolymer stabilization
    Patent number: 6689833
    Abstract: Fluoropolymer resin is stabilized and/or whitened by addition of a small amount of alkali metal nitrate prior to extrusion. The nitrate can be introduced during polymerization, isolation, or preparation of extruder feed.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: February 10, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: David Elton Bidstrup, Leslie Mitchell Blair