Patents by Inventor Mitsuhiko Nohmi

Mitsuhiko Nohmi 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).

  • Method of solidifying radioactive waste and solidified product thereof
    Patent number: 4832874
    Abstract: A radioactive waste that chiefly contains sodium sulfate or sodium borate as a solids content is blended with a mixture consisting of about 5-35 wt % of a low-molecular weight polyolefin and about 95-65 wt % of straight asphalt, and the resulting mix is processed into a solidified form. The solidified waste thus obtained has a softening point at least 20.degree.-30.degree. C. higher than the hertofore attainable values and exhibits good shape stability at elevated temperatures.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: May 23, 1989
    Assignee: Ebara Corporation
    Inventor: Mitsuhiko Nohmi