Patents by Inventor George Leoutsacos Lewis

George Leoutsacos Lewis 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).

  • Process for producing a particulate mullite fibril containing composition
    Patent number: 3993499
    Abstract: Single crystal mullite fibrils having a diameter of about 3-100 nanometers, a length of about 0.05-2 microns and a length-to-diameter ratio of about 5-100:1 prepared by heating an intimate mixture of alumina and silica sources in the presence of an alkali metal salt flux to a temperature of about 750.degree.-1200.degree. C.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: November 23, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Howard Wayne Jacobson, George Leoutsacos Lewis
  • Mullite fibrils
    Patent number: 3951677
    Abstract: Single crystal mullite fibrils having a diameter of about 3-100 nanometers, a length of about 0.05-2 microns and a length-to-diameter ratio of about 5-100:1 prepared by heating an intimate mixture of alumina and silica sources in the presence of an alkali metal salt flux to a temperature of about 750.degree.-1200.degree.C.
    Type: Grant
    Filed: October 4, 1974
    Date of Patent: April 20, 1976
    Inventors: Howard Wayne Jacobson, George Leoutsacos Lewis