Granted Patent
Utility
US 5,770,779 · App. 08/778,427
Process for preparation of fluorinated hydrocarbons
Inventors:
Mario Joseph Nappa, William R. Williams
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Jan 2, 1997
Inventors
Mario Joseph Nappa
William R. Williams
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.