Granted Patent
Utility
US 5,474,580 · App. 08/158,220
Chemical compounds
Inventors:
Andrew H. M. Renfrew, Andrew Paul Shawcross
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Nov 29, 1993
Inventors
Andrew H. M. Renfrew
Andrew Paul Shawcross
Assignee (at issue)
Zeneca Limited
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.