Patents by Inventor Donald Lee Johnson

Donald Lee Johnson 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).

  • Foliar applications of urea-polyphosphate-potassium solutions to crops
    Patent number: 4038064
    Abstract: Urea-polyphosphate-potassium solution is applied to foliage of field crops such as soybeans, between flowering and seed set to increase yields.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: July 26, 1977
    Assignee: Allied Chemical Corporation
    Inventors: John G. Clapp, Donald Lee Johnson, James Earl Sansing, Jr.
  • Chair
    Patent number: D799878
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: October 17, 2017
    Inventor: Donald Lee Johnson