Patents by Inventor Jeffrey I. Eldridge

Jeffrey I. Eldridge 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).

  • Temperature and pressure sensors based on spin-allowed broadband luminescence of doped orthorhombic perovskite structures
    Patent number: 8695430
    Abstract: Systems and methods that are capable of measuring pressure or temperature based on luminescence are discussed herein. These systems and methods are based on spin-allowed broadband luminescence of sensors with orthorhombic perovskite structures of rare earth aluminates doped with chromium or similar transition metals, such as chromium-doped gadolinium aluminate. Luminescence from these sensors can be measured to determine at least one of temperature or pressure, based on either the intense luminescence of these sensors, even at high temperatures, or low temperature techniques discussed herein.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: April 15, 2014
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Jeffrey I. Eldridge, Matthew D. Chambers
  • Apparatus for performing high-temperature fiber push-out testing
    Patent number: 5361641
    Abstract: The apparatus disclosed in the present invention measures the force at which a fiber resist the motion of an indenter driven at constant speed. This apparatus conducts these test in a vacuum of about 10.sup.-6 tort and at temperatures up to 1100.degree. C. Temperature and vacuum environment are maintained while controlling indenter motion, sample position, and providing magnified visual inspection during the test.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: November 8, 1994
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Jeffrey I. Eldridge, Ben T. Ebihara