Patents by Inventor Borivoj Keil

Borivoj Keil 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).

  • Flavoring with mixtures of theobromine and cyclic dipeptides
    Patent number: 4006261
    Abstract: Compositions useful in the flavoring of foodstuffs and the like to impart bitterness and astringent flavor thereto wherein said composition comprises compounds A and B, said A compound being a cyclic dipeptide and said B compound being a purine derivative.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: February 1, 1977
    Assignee: Firmenich S.A.
    Inventors: Wilhelm Pickenhagen, Paul Dietrich, Borivoj Keil, Edgar Lederer