Patents by Inventor Alfonso P. Elena

Alfonso P. Elena 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).

  • Patent number: 5310281
    Abstract: A system for irrigating the roots of plants below the surface of the ground in which a narrow irrigation tube is connected at its upper end to a water distribution source. The irrigation tube extends below the surface of the ground from the water distribution source in generally vertical alignment with the stalk of the plant, and its lower end opens vertically downwardly below the roots of a plant, so that water may be discharged from the opening in the lower end in a downwardly direction. The soil in the planting site is broken up to a depth of at least five feet below ground surface.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: May 10, 1994
    Inventor: Alfonso P. Elena