Patents by Inventor Keith F. Wold

Keith F. Wold 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: 5601236
    Abstract: An autonomous plant watering and growth enhancement apparatus for arid climatic regions may include a solar powered Peltier unit or absorption cycle atmospheric vapor condensation module, to deliver a supply of water to a storage module. The stored water is supplied to a subsurface, site-specific delivery system located intimately with a target plant. The apparatus preferably utilizes fuzzy logic supervision provided with local sensing means and historical vapor pressure maps to control and predict water usage while controllably supplementing the delivered water with nutrients and anti-transpirants as needed.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: February 11, 1997
    Inventor: Keith F. Wold