Granted Patent
Utility
US 6,312,561 · App. 09/489,067
Flame barrier compositions and their use
Inventors:
Herman Hans Forsten, Sami Khan
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Jan 21, 2000
Inventors
Herman Hans Forsten
Sami Khan
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.