Patents by Inventor David R. Allan

David R. Allan 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).

  • Method to increase the heat deflection temperature of amorphous polyethylene terephthalate
    Patent number: 4225549
    Abstract: The heat deflection temperature of amorphous thermoformed polyethylene terephthalate is increased by removing absorbed and/or adsorbed water therefrom, as by heating in an oven, or by desiccation. Following drying, the material is kept in a desiccated storage vessel until time of use.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: September 30, 1980
    Assignee: The Mead Corporation
    Inventor: David R. Allan