Patents by Inventor Margaret M. Desmond

Margaret M. Desmond 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).

  • Manufacture of .gamma.-Fe.sub.2 O.sub.3
    Patent number: 4054643
    Abstract: A process for the preparation of essentially pure ferromagnetic .gamma.-Fe.sub.2 O.sub.3 by bringing a solution of a water soluble iron salt to a pH between about 8.0 and 11.0 to obtain a suspension of iron hydroxide, passing air through the iron hydroxide suspension at a temperature of from about 25.degree. to about 80.degree. C., and separating said pure .gamma.-Fe.sub.2 O.sub.3.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: October 18, 1977
    Assignee: Suntech, Inc.
    Inventor: Margaret M. Desmond