Patents by Inventor Jack Lee Smith

Jack Lee Smith 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).

  • Composite fertilizer and method for its manufacture
    Patent number: 4032319
    Abstract: This invention relates to novel fertilizer particles having an inner core and an outer water permeable sulfur coating; to a method of preparing these fertilizer particles by contacting a particulate core material in a fluidized bed, or other suitable coating apparatus, with molten sulfur which solidifies upon the core material; the process preferably being conducted in a fluidized bed having an inert atmosphere in the material contacting zone. This invention is particularly useful in preparing triple superphosphate fertilizers with a water permeable coating of elemental sulfur.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: June 28, 1977
    Assignee: J. R. Simplot Company
    Inventors: Jack Lee Smith, Charles Raymond Crowley, Roger Benton Humberger