Granted Patent
Utility
US 4,592,776 · App. 06/698,001
Sulfamoyl urea derivatives
Inventor:
Barry Van Gemert
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Feb 4, 1985
Inventor
Barry Van Gemert
Assignee (at issue)
PPG Industries, 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.