Granted Patent
Utility
US 4,766,221 · App. 06/848,201
N-acyl substituted cyclic ureas
Inventor:
William C. Floyd, III
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Apr 4, 1986
Inventor
William C. Floyd, III
Assignee (at issue)
Sequa Chemicals, 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.