Granted Patent
Utility
US 6,764,971 · App. 09/798,304
Imaged nonwoven fire-retardant fiber blends and process for making same
Inventors:
Karl Kelly, Thomas Hill, Francois Lapierre, Spiro De Luca, Sergio De Leon
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Mar 2, 2001
Inventors
Karl Kelly
Thomas Hill
Francois Lapierre
Spiro De Luca
Sergio De Leon
Assignee (at issue)
Polytec GmbH
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.