Patents by Inventor Bruce Hartmann

Bruce Hartmann 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).

  • Polymer having network structure
    Patent number: 6545118
    Abstract: A series of polymeric compositions, methods of making the compositions and uses of the compositions are described. An exemplary composition is made by copolymerization of a trifunctional amine or hydroxy compound, a monofunctional amine or hydroxy compound and a polyisocyanate compound.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: April 8, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jeffry J. Fedderly, John D. Lee, Gilbert F. Lee, Bruce Hartmann, Karel Dusek, Jan Somvarsky
  • Material characterizing system
    Patent number: 5363701
    Abstract: A plurality of elongated test specimens undergo vibrations induced by ran noise within an acoustical frequency range establishing standing waves therein having resonant frequencies at which the collection of measurement data through accelerometers mounted at the ends of the specimens provides for calculation of physical material properties. The processing of the data during collection, analysis and calculation is automated by programmed computer control.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: November 15, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gilbert F. Lee, Bruce Hartmann
  • Material characterizing system
    Patent number: 5345825
    Abstract: A plurality of elongated test specimens undergo vibrations induced by ran noise within an acoustical frequency range establishing standing waves therein having resonant frequencies at which the collection of measurement data through accelerometers mounted at the ends of the specimens provides for calculation of physical material properties. The processing of the data during collection, analysis and calculation is automated by programmed computer control.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: September 13, 1994
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Gilbert F. Lee, Bruce Hartmann