Granted Patent
Utility
US 4,920,052 · App. 07/152,481
Process for producing glucose isomerase
Inventor:
Graham S. Byng
Patented Case
View Patent ↗
Granted: Apr 24, 1990
Filed: Feb 5, 1988
Inventor
Graham S. Byng
Assignee (at issue)
Miles 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.