Patents by Inventor Alan M. Portis

Alan M. Portis 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).

  • Determining paramagnetic additive content of a base paramagnetic material containing ferromagnetic impurity
    Patent number: 4243939
    Abstract: Method and apparatus for the nondestructive determination of the amount and quantitative distribution of a paramagnetic additive such as gadolinia in nuclear fuel elements. Changes in paramagnetic susceptibility of the material in the element are detected as the element is passed through a constant magnetic field and compared to the changes in susceptibility produced by a standard element of known additive content.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: January 6, 1981
    Assignee: General Electric Company
    Inventors: Leonard N. Grossman, Alan M. Portis, Henry Bernatowicz, Frederick C. Schoenig, Jr.