Patents by Inventor Frank Guerin

Frank Guerin 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).

  • Stable carotenoid solutions
    Patent number: 4316917
    Abstract: Stable carotenoid solutions useful as colorants in foods and which are dispersible in water or soluble in oil-based products or emulsions are disclosed.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: February 23, 1982
    Assignee: Hoffman-La Roche Inc.
    Inventors: Thomas Antoshkiw, Marco A. Cannalonga, Frank Guerin