Patents by Inventor Claude C. Frazier

Claude C. Frazier 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).

  • Optical monlinearity of aminobenzophenone derivatives
    Patent number: 4909608
    Abstract: Certain benzophenone derivatives having acentric crystalline space groups are disclosed as second-order nonlinear optical materials. The second harmonic signal of such derivatives is enhanced for compounds containing an electron-donating group attached to one of the benzene rings and which is para relative to the carbonyl group of the benzophenone derivative. Benzophenone hydrazone, 4-aminobenzophenone, and 4-amino-3-nitrobenzophenone are exemplary benzophenone derivatives according to the invention. Also disclosed are nonlinear optical devices which include single crystals of the benzophenone derivatives.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: March 20, 1990
    Assignee: Martin Marietta Corporation
    Inventor: Claude C. Frazier, III
  • Poly-yne nonlinear optical materials
    Patent number: 4879479
    Abstract: The present invention relates to a device for optical switching, frequency conversion, and protection of sensory organs and optical and electronic sensors which comprises at least one layer comprising a polymerized transition metal poly-yne.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: November 7, 1989
    Assignee: Martin Marietta Corporation
    Inventors: Claude C. Frazier, Shekhar Guha, Wenpeng Chen
  • Irradiated polymer supported metal catalyst
    Patent number: 4228035
    Abstract: Novel polymer supported catalysts are prepared by irradiation of low valent transition metal compounds such as iron carbonyl in the presence of solid polymers containing ligands such as phosphinated polystyrene. Hydrogenation of olefins at ambient conditions has been demonstrated.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: October 14, 1980
    Assignee: California Institute of Technology
    Inventors: Harry B. Gray, Claude C. Frazier