Granted Patent
Utility
US 4,945,052 · App. 07/045,859
Production of a Vitamin C precursor using genetically modified organisms
Inventors:
Kimber Hardy, Hendrick van de Pol, June Grindley, Mark Anthony Payton
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Jun 2, 1987
Inventors
Kimber Hardy
Hendrick van de Pol
June Grindley
Mark Anthony Payton
Assignee (at issue)
Biogen 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.