Patents by Inventor Frank C. Douglas

Frank C. Douglas 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).

  • Photon absorbing surfaces and methods for producing the same
    Patent number: 4209008
    Abstract: Photon absorbing surfaces which are effective over a broad band of photon energies are described. These surfaces consist of a two-phase material with a protruding second phase whose dimensions are on the order of microns. Photons are absorbed by multiple reflections within the region of the protruding phase. The surfaces are produced by directional solidification of eutectic compositions to produce aligned second phase microstructures within a metallic matrix. The matrix material is then selectively removed to expose the second phase material.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: June 24, 1980
    Assignee: United Technologies Corporation
    Inventors: Franklin D. Lemkey, Frank C. Douglas, Gerald S. Golden, Clyde S. Brooks