Patents by Inventor Leonard R. Fleischer

Leonard R. Fleischer 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).

  • Concrete encapsulation for spent nuclear fuel storage
    Patent number: 4257912
    Abstract: Concrete systems, mixtures and methods for encapsulating and storing spent nuclear fuel. Fuel discharged from nuclear reactors in the form of rods or multi-rod assemblies is completely and contiguously enclosed in concrete having incorporated therein metallic fibers to increase thermal conductivity and polymers to decrease fluid permeability. The metallic fibers and the polymers can be distributed in a single concrete layer, or separate contiguous layers can be utilized for the conductivity and impermeability characteristics.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: March 24, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Leonard R. Fleischer, Muthian Gunasekaran
  • Solid solution carbide nuclear fuels
    Patent number: 4220614
    Abstract: A powder compact of mixed zirconium, carbon and uranium monocarbide powders is heated to melt first the zirconium constituent. The liquid zirconium reacts with the solid phases by a diffusion controlled process to form zirconium carbide and a (U,Zr)C solution. The compact is then heated to a higher temperature to melt the uranium monocarbide to form additional (U,Zr)C solid solution whereby the final product is composed of a single phase homogeneous solid solution.
    Type: Grant
    Filed: April 4, 1967
    Date of Patent: September 2, 1980
    Assignee: Westinghouse Electric Corp.
    Inventor: Leonard R. Fleischer