Granted Patent
Utility
US 5,298,657 · App. 07/854,496
Preparation of substituted guanidines
Inventors:
Graham J. Durant, Sharad Magar
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Mar 20, 1992
Inventors
Graham J. Durant
Sharad Magar
Assignee (at issue)
Cambridge NeuroScience, 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.