Granted Patent
Utility
US 6,191,231 · App. 09/341,617
Grafting of polymers with fluorocarbon compounds
Inventors:
Neville Everton Drysdale, Lin Wang, Zhen-Yu Yang
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Jul 13, 1999
Inventors
Neville Everton Drysdale
Lin Wang
Zhen-Yu Yang
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.