Patents by Inventor Harold Stephens

Harold Stephens 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).

  • Plant growth container and method
    Patent number: 4716680
    Abstract: An improved growth container and method for growing a plant to be transplanted are provided. The interior of the side walls of the container have a lattice of root-trapping recesses therein each having a trough with a pointed end for directing roots growing therein downwardly and outwardly so as to form trapped lateral root tips. The side panels can be disconnected and moved laterally apart to prevent damage to the root tips trapped in the recesses.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: January 5, 1988
    Inventors: Carl E. Whitcomb, Harold Stephens