Patents by Inventor Edward G. Davis

Edward G. Davis 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).

  • Beneficiation of olivine foundry sand by differential attrition grinding
    Patent number: 4039625
    Abstract: A high quality olivine foundry sand is produced from olivine-containing rock by wet differential attrition grinding followed by a size separation to remove finely-divided gangue materials. The olivine sand product displays rounded grains, has a low impurity content and produces castings having superior surface quality.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: August 2, 1977
    Assignee: The United States of America as represented by the Secretary of the Interior
    Inventor: Edward G. Davis