Patents by Inventor Josef Rudinger

Josef Rudinger 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).

  • Colorings
    Patent number: 4000118
    Abstract: Nontoxic coloring compositions which comprise optically chromophoric groups attached via sulfonamido linkages to nondegradable chemical molecules having molecular dimensions which substantially prevent their absorption from the gastrointestinal tract are disclosed. The colorings find primary applications as food colors.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: December 28, 1976
    Inventors: Daniel J. Dawson, Josef Rudinger