Granted Patent
Utility
US 6,180,740 · App. 09/244,712
Stabilization of fluorochemical copolymer emulsions
Inventor:
John J. Fitzgerald
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Feb 4, 1999
Inventor
John J. Fitzgerald
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.