Patents by Inventor Stephan Jaggli

Stephan Jaggli 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).

  • Sulfone polyene intermediates
    Patent number: 4883887
    Abstract: A process for producing carotenoids and carotenoid intermediates via reduction of sulfonyl polyenes with a dithionite in the presence of ammonia or an aliphatic amine, including novel intermediates in this process, which carotenoids are known coloring agents for foodstuffs, animal feeds, pharmaceuticals, etc.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: November 28, 1989
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Kurt Bernhard, Stephan Jaggli, Paul Kreienbuhl, Ulrich Schwieter