Granted Patent
Utility
US 5,601,647 · App. 08/379,528
Production of a magnetic recording medium
Inventors:
Albert Pertzsch, Reinhard Kraetschmer, Michael Breitsameter, Siegfried Rieger
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Feb 1, 1995
Inventors
Albert Pertzsch
Reinhard Kraetschmer
Michael Breitsameter
Siegfried Rieger
Assignee (at issue)
BASF Magnetics 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.