Granted Patent
Utility
US 4,994,490 · App. 07/331,997
Novel N-(sulfomethyl)-N'-arylureas
Inventors:
Glenn Roy, Chris Culberson, George W. Muller, Srinivasan Nagarajan
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Apr 3, 1989
Inventors
Glenn Roy
Chris Culberson
George W. Muller
Srinivasan Nagarajan
Assignee (at issue)
The NutraSweet Company
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.