Patents by Inventor Bob Joe Cruson

Bob Joe Cruson 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).

  • Foamed profile extrusion process
    Patent number: 3931379
    Abstract: A process for the manufacture of profiled products by extruding in a substantially non-expanded state an expandable styrene polymer composition through a die orifice having the desired profile and subsequently passing the extruded material through a sizing member wherein it expands to the desired profile and cross-section to produce an article having a porous inner cross-section and a solid, non-foamed outer layer and wherein the styrene polymer composition employed is one containing from about 0.2 to 1.0 parts by weight of an alkaline earth metal carbonate blowing agent and from about 0.2 to 1.0 parts by weight of an organic acid per 100 parts by weight of styrene polymer.
    Type: Grant
    Filed: July 17, 1973
    Date of Patent: January 6, 1976
    Assignee: Cosden Oil & Chemical Company
    Inventors: Bob Joe Cruson, Ronald D. Medley