Granted Patent
Utility
US 6,387,972 · App. 09/784,546
Process to enhance polyurethane foam performance
Inventors:
Hassan El Ghobary, Louis Muller
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Feb 15, 2001
Inventors
Hassan El Ghobary
Louis Muller
Assignee (at issue)
Crompton Corporation
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.