Patents by Inventor Peter Creegan

Peter Creegan 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).

  • Methods for the preparation of three-dimensional bodies
    Patent number: 5932290
    Abstract: The present invention generally relates compositions and methods for the preparation of three-dimensional bodies e.g., green bodies, ceramic-loaded green bodies, and polymer matrix composites by the controlled, sequential deposition of layers of material upon one another The method for preparing a green body comprises depositing a liquid composition having a viscosity of at least about 10 poise and comprising thermally-polymerizable components onto a base in a predetermined pattern to form a layer of the liquid composition on the base. Subsequently, at least one further layer of the liquid composition is deposited on a previously-formed layer in a predetermined pattern to form a multi-layered intermediate and, then, the multi-layered intermediate is heated to cause the thermally-polymerizable components to polymerize, providing the three-dimensional green body. Another method of the present invention provides a method for reinforcing a green body with fibers.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: August 3, 1999
    Assignee: Advanced Ceramics Research
    Inventors: John Lombardi, Anthony Mulligan, Paul Calvert, Peter Creegan, Kevin Stuffle
  • Methods for the preparation of reinforced three-dimensional bodies
    Patent number: 5906863
    Abstract: The present invention generally relates compositions and methods for the preparation of three-dimensional bodies, e.g., green bodies, ceramic-loaded green bodies, and polymer matrix composites, by the controlled, sequential deposition of layers of material upon one another. The method for preparing a green body comprises depositing a liquid composition having a viscosity of at least about 10 poise and comprising thermally-polymerizable components onto a base in a predetermined pattern to form a layer of the liquid composition on the base. Subsequently, at least one further layer of the liquid composition is deposited on a previously-formed layer in a predetermined pattern to form a multi-layered intermediate and, then, the multi-layered intermediate is heated to cause the thermally-polymerizable components to polymerize, providing the three-dimensional green body. Another method of the present invention provides a method for reinforcing a green body with fibers.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: May 25, 1999
    Inventors: John Lombardi, Anthony Mulligan, Paul Calvert, Peter Creegan, Kevin Stuffle