Granted Patent
Utility
US 5,756,345 · App. 08/708,752
Production of tryptophan by the bacterium Escherichia coli
Inventors:
Helen Camakaris, Peter Cowan, James Pittard
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Sep 5, 1996
Inventors
Helen Camakaris
Peter Cowan
James Pittard
Assignee (at issue)
Degussa AG
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.