Patents by Inventor Richard F. Zoia

Richard F. Zoia 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 and system for constructing a structural foam part
    Patent number: 6609043
    Abstract: A method for constructing a structural foam part. The method comprises three steps. Step one calls for utilizing a rapid prototyping process to create a polymer mold. Step two requires filling the polymer mold with a material. The last step calls for heating the polymer mold and the material to heat set the material and to remove the polymer mold thereby forming the structural foam part. More specifically, the rapid prototyping process may be stereolithography, and the structural foam part may have a varying density such that different mechanical properties exist in different sections of the structural foam part.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: August 19, 2003
    Assignee: Northrop Grumman Corporation
    Inventors: Richard F. Zoia, Boris C. Fritz