Granted Patent
Utility
US 5,480,916 · App. 08/433,280
Method for producing cold polyurethane foams
Inventors:
Anette Brune-Fischer, Georg Burkhart, Bernd-Jurgen Klietsch, Volker Zellmer
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Apr 28, 1995
Inventors
Anette Brune-Fischer
Georg Burkhart
Bernd-Jurgen Klietsch
Volker Zellmer
Assignee (at issue)
Th. Goldschmidt. AG
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.