Granted Patent
Utility
US 5,489,709 · App. 08/192,990
Preparation of substituted guanidines
Inventors:
Graham J. Durant, Sharad Magar
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Feb 8, 1994
Inventors
Graham J. Durant
Sharad Magar
Assignees (at issue)
Cambridge NeuroScience, Inc.
The University of Toledo
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.