Patents by Inventor John Alan Ernst

John Alan Ernst 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).

  • Additive and method for reducing the drift of aqueous spray compositions
    Patent number: 4102667
    Abstract: An additive composition containing a substantially water-soluble, alternating copolymer of maleic acid and a conjugated diene such as butadiene for reducing the drift of aqueous spray compositions. Certain salts of the copolymer may also be employed and the aqueous spray compositions may either be water or water-containing compositions containing herbicides, plant growth regulators, fungicides, insecticides, bactericides, fertilizers, defoliants, seeds, and the like as well as mixtures thereof. The drift-inhibiting additive compositions of this invention may also be used in conjunction with water-based paints. A method of dispensing aqueous compositions on the ground utilizing the drift-inhibiting additive compositions is also encompassed by the invention.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: July 25, 1978
    Assignee: Lindau Chemicals, Inc.
    Inventors: Robert Earl Robinson, John Alan Ernst