Granted Patent
Utility
US 5,786,397 · App. 08/902,220
Foamable molding compositions
Inventors:
Helmut Scheckenbach, Axel Schonfeld, Siegfried K. Weis
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Jul 29, 1997
Inventors
Helmut Scheckenbach
Axel Schonfeld
Siegfried K. Weis
Assignee (at issue)
Hoechst GmbH
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.