Patents by Inventor Danny R. Ratliff

Danny R. Ratliff 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).

  • Low-density, high strength aramid boards
    Patent number: 5089088
    Abstract: Flash expansion of moist multi-layered boards wherein each layer comprises aramid floc bonded by aramid fibrid results in high strength, low density aramid boards.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: February 18, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gary L. Hendren, Danny R. Ratliff