Granted Patent
Utility
US 4,806,651 · App. 07/105,330
Process for preparing 3,3-disubstituted indolines
Inventors:
Walter M. Bryant, III, George F. Huhn
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Oct 7, 1987
Inventors
Walter M. Bryant, III
George F. Huhn
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.