Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5780693 | Process for the manufacturing of zeaxanthin from lutein | Alfred Giger | 1998-07-14 |
| 5670548 | Pigmentation with carotenoids | Jiri Broz, Urs Hengartner, Paul Kreienbuhl, Katharina Schiedt | 1997-09-23 |
| 5605699 | Pigmentation with carotenoids | Jiri Broz, Urs Hengartner, Paul Kreienbuhl, Katharina Schiedt | 1997-02-25 |
| 4883887 | Sulfone polyene intermediates | Stephan Jaggli, Paul Kreienbuhl, Ulrich Schwieter | 1989-11-28 |
| 4585885 | Cyclohexenone derivatives and process for making same | Robert Karl Muller, Robert Spruijtenburg | 1986-04-29 |