Granted Patent
Utility
US 5,641,821 · App. 08/418,607
Polypropylene molding materials
Inventors:
Erhard Seiler, Werner Schone
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Apr 7, 1995
Inventors
Erhard Seiler
Werner Schone
Assignee (at issue)
BASF SE
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.