Granted Patent
Utility
US 6,319,962 · App. 09/311,351
Hydrocarbon blown rigid polyurethane foams having improved flammability performance
Inventors:
Sachchida N. Singh, Joseph S. Costa, Rachel E. Berrier
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: May 13, 1999
Inventors
Sachchida N. Singh
Joseph S. Costa
Rachel E. Berrier
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.