Patents by Inventor Michael D. Vick

Michael D. Vick 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).

  • Iron based roofing granules and method of coloring same
    Patent number: 6156289
    Abstract: Method of preparing colored roofing granules (18) from granulated mineral-containing matter having an elemental iron content of about 15% to about 70% is disclosed. The method comprises heating the granules (18) to a temperature of from about 450.degree. C. to about 1,000.degree. C. and maintaining the temperature for a period of time sufficient to effect a color change in the granules. The resulting oxidized granules are permanently colored and will not fade in use.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: December 5, 2000
    Assignee: Minerals Research & Recovery, Inc.
    Inventors: Manjit S. Chopra, Michael D. Vick