Granted Patent
Utility
US 5,342,937 · App. 07/773,386
Heterocyclic thione
Inventors:
Peter W. Austin, Peter M. Quan, Peter A. Tasker, Derek Thorp
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Oct 7, 1991
Inventors
Peter W. Austin
Peter M. Quan
Peter A. Tasker
Derek Thorp
Assignees (at issue)
Zeneca Limited
Nerco, 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.