Granted Patent
Utility
US 6,828,284 · App. 09/923,838
Flourinated compositions comprising phosphorus
Inventors:
Jon Lee Howell, Erik William Perez
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Aug 6, 2001
Inventors
Jon Lee Howell
Erik William Perez
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.