Granted Patent
Utility
US 6,248,823 · App. 09/338,149
Solvents for amorphous fluoropolymers
Inventors:
Jeffrey A. Hrivnak, Walter Mahler, William G. O'Brien, Viacheslav A. Petrov, Robert Clayton Wheland
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Jun 23, 1999
Inventors
Jeffrey A. Hrivnak
Walter Mahler
William G. O'Brien
Viacheslav A. Petrov
Robert Clayton Wheland
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.