Patents by Inventor Jerry L. Merkel

Jerry L. Merkel 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).

  • Composite plastic structure and method for producing same
    Patent number: 4323623
    Abstract: Core sandwich structure comprised of a lightweight core material in the form of a low density thermosetting resin matrix composition containing glass microballoons, particularly an epoxy resin containing glass microballoons, sandwiched between high strength fiber-thermosetting resin matrix outer sheets, particularly woven graphite-epoxy sheets. Employing epoxy resin as the preferred thermosetting resin, the epoxy core material is B-staged, placed between sheets of pre-preg woven graphite-epoxy material, and the assembly co-cured under pressure to form the core sandwich structure.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: April 6, 1982
    Assignee: McDonnell Douglas Corporation
    Inventors: Robert O. Ahrens, Jerry L. Merkel