Granted Patent
Utility
US 6,774,153 · App. 10/191,371
Process for preparing a free rise or slabstock flexible polyurethane foam
Inventors:
Alain Parfondry, Jianming Yu
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Jul 1, 2002
Inventors
Alain Parfondry
Jianming Yu
Assignee (at issue)
HUNTSMAN INTERNATIONAL LLC
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.