Patents by Inventor Christopher John Markham

Christopher John Markham 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).

  • Deer repellent
    Patent number: 6641830
    Abstract: A deer repellent to deter deer from eating trees, shrubs and plants. The deer repellent is a mixture of milk, eggs, corn oil and sodium lauryl sulfate. The mixture is blended and applied to the foliage with a sprayer to prevent unwanted deer browse.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: November 4, 2003
    Inventor: Christopher John Markham