Granted Patent
Utility
US 5,969,067 · App. 08/929,216
Phosphorus-containing fluoromonomers and polymers thereof
Inventors:
Paul Douglas Brothers, Ming-Hong Hung, Michael Joseph Michalczyk, Tatsuhiro Takahashi
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Sep 9, 1997
Inventors
Paul Douglas Brothers
Ming-Hong Hung
Michael Joseph Michalczyk
Tatsuhiro Takahashi
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.