Granted Patent
Utility
US 5,670,548 · App. 08/726,599
Pigmentation with carotenoids
Inventors:
Kurt Bernhard, Jiri Broz, Urs Hengartner, Paul Kreienbuhl, Katharina Schiedt
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Oct 7, 1996
Inventors
Kurt Bernhard
Jiri Broz
Urs Hengartner
Paul Kreienbuhl
Katharina Schiedt
Assignee (at issue)
Roche Vitamins Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.