Patents by Inventor John D. Hagerman

John D. Hagerman 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).

  • Method of killing rodents
    Patent number: 4287183
    Abstract: A rodenticide composition is provided comprising a dry mixture of a first ingredient which is a substance that rodents are fond of eating, and a second ingredient which has the propensity to react with water and thereby transform to a hydrated cementitious solid aggregate. Each of said ingredients is present to the extent of between about 20% and 60% by volume of said composition.A method of killing rodents is provided comprising disposing quantities of said composition in a manner to avoid contact with water in locations frequented by rodents, and allowing said rodents to ingest effective amounts of said composition.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: September 1, 1981
    Inventors: John D. Hagerman, Brenda M. Hagerman