Patents by Inventor Hal K. Bowman

Hal K. Bowman 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: 4668434
    Abstract: The present invention is directed to a composition of matter which provides a slow release fragrance for animal skin products such as shampoos, conditioners, insect (e.g., flea, tick) repellants or insecticides.The present invention is especially directed to the use of a combination of one or more perfumes and a polymer that, when added to hair coat treatment products for animals, extend the aromatic life of the fragrance.Preferably, the slow release fragrance composition comprises a fragrance base, such as any of the commercially available perfumes or perfume concentrates, and a water-soluble polymer. Preferably, the polymer is a vinyl copolymer. The most preferred polymer is the copolymer obtained by reaction of the monomers N-vinylpyrrolidone and dimethylamino ethyl methacrylate.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: May 26, 1987
    Assignee: Zema Corporation
    Inventor: Hal K. Bowman