Granted Patent
Utility
US 4,900,740 · App. 07/104,601
N,N'-disubstituted guanidines containing a carboxyl or a tetrazolyl moiety
Inventors:
George W. Muller, Eric Walters, Grant E. DuBois
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Oct 2, 1987
Inventors
George W. Muller
Eric Walters
Grant E. DuBois
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.