Patents by Inventor Harish Chandan

Harish Chandan 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 for producing sodium-beta-alumina solid electrolytes
    Patent number: 3959022
    Abstract: An improved method is disclosed for producing a solid sodium-beta-alumina electrolyte, characterized by the step of mixing the sodium-beta-alumina powder -- prior to sintering -- with a sodium-aluminum oxide additive in which the atom ratio of sodium to aluminum is 0.54. Consequently, the temperature to which the resulting mixture must be heated to achieve sintering is greatly lowered (i.e., to between 1600.degree. C. and 1700.degree. C) by the presence of a reactive liquid phase, and the resulting sintered product has a greater density and a lower resistivity, and undesirable abnormal grain growth is avoided.
    Type: Grant
    Filed: July 9, 1975
    Date of Patent: May 25, 1976
    Assignee: Cornell Research Foundation, Inc.
    Inventors: Lutgard C. DeJonghe, Harish Chandan