Patents by Inventor Della M. Roy

Della M. Roy 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 storing radioactive wastes using modified tobermorite
    Patent number: 4537710
    Abstract: A new cation exchanger is a modified tobermorite containing aluminum isomorphously substituted for silicon and containing sodium or potassium. The exchanger is selective for lead, rubidium, cobalt and cadmium and is selective for cesium over calcium or sodium. The tobermorites are compatable with cement and are useful for the long-term fixation and storage of radioactive nuclear wastes.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: August 27, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Sridhar Komarneni, Della M. Roy
  • High temperature cement
    Patent number: 4274881
    Abstract: A high temperature, curable cement which is characterized in the cured state by a hydrothermally crystallized phase of diopside and/or serpentine.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: June 23, 1981
    Inventors: Christine A. Langton, Della M. Roy