Patents by Inventor K. Dale Ritchey

K. Dale Ritchey 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).

  • Method of ameliorating acid soil to enhance plant growth
    Patent number: 5628811
    Abstract: A method of ameliorating acid soils so as to enhance plant growth is provided by adding to soil 0.05 to 20 percent by weight, based on the weight of the soil, of a flue gas desulfurization by-product consisting essentially of 80-99 percent by weight of gypsum (CaSO.sub.4.2H.sub.2 O) and 1-20 percent by weight of magnesium hydroxide (Mg(OH).sub.2).
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: May 13, 1997
    Assignees: Dravo Lime Company, U.S. Department of Agriculture
    Inventors: John W. College, Joel H. Beeghly, K. Dale Ritchey, Virupax C. Baligar, Ralph B. Clark