Granted Patent
Utility
US 6,346,205 · App. 09/761,838
Rigid polyurethane foams
Inventors:
Thomas Heinrich Sieker, Franco Gabrieli
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Jan 18, 2001
Inventors
Thomas Heinrich Sieker
Franco Gabrieli
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.