Granted Patent
Utility
US 6,773,805 · App. 10/332,550
Method for protection of stone with substantially amorphous fluoropolymers
Inventors:
Andrew Edward Feiring, William H. Tuminello
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jun 20, 2003
Inventors
Andrew Edward Feiring
William H. Tuminello
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.