Patents by Inventor Walter Polovina

Walter Polovina 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).

  • Polymeric film coating method for protecting plants, vegetables and fruit from drought
    Patent number: 4783342
    Abstract: This invention relates to a method of preserving plants during periods of drought by applying a solid, water permeable film which controls water loss, to the surface of the plants. The same film can also be used to preserve vegetables and fruit. The water permeable film is also effective to preserve cut flowers.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: November 8, 1988
    Inventor: Walter Polovina