Granted Patent
Utility
US 4,923,873 · App. 07/050,354
Quinazoline substituted aminomethyl benzene derivatives
Inventors:
David M. Stout, William L. Matier
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: May 18, 1987
Inventors
David M. Stout
William L. Matier
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.