Granted Patent
Utility
US 5,208,381 · App. 07/905,968
Method for the manufacture of carotinoids and novel intermediates
Inventor:
Karl R. Meyer
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jun 29, 1992
Inventor
Karl R. Meyer
Assignee (at issue)
HOFFMANN-LA ROCHE 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.