Patents by Inventor Fred Eugene Ferguson

Fred Eugene Ferguson 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).

  • Fertilizer composition containing ferrous salt
    Patent number: 3963118
    Abstract: The pick-up of free moisture by particulate fertilizer compositions containing a ferrous salt is reduced by the addition to the compositions of relatively small amounts of anhydrous magnesium sulfate.
    Type: Grant
    Filed: October 31, 1974
    Date of Patent: June 15, 1976
    Assignee: O. M. Scott & Sons Company
    Inventor: Fred Eugene Ferguson