Granted Patent
Utility
US 5,849,345 · App. 08/573,814
Carotenoid ketones and esters
Inventors:
Alfred Giger, Werner Simon
Patented Case
View Patent ↗
Granted: Dec 15, 1998
Filed: Dec 18, 1995
Inventors
Alfred Giger
Werner Simon
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.