Patents by Inventor Harold R. Coleman

Harold R. Coleman 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 coloring synthetic food casings
    Patent number: 4038438
    Abstract: A method for coloring synthetic food casings such as casings manufactured from cellulose and collagen wherein the tubular casing in the gel state is impregnated with a solution containing caramel and thereafter the caramel is cross-linked and insolubilized in the casing to effect permanent coloring of the casing.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: July 26, 1977
    Assignee: Tee-pak, Inc.
    Inventors: Matiur Rahman, Harold R. Coleman