Granted Patent
Utility
US 6,406,560 · App. 09/562,698
Method for the thermal treatment of metal
Inventors:
Wolfgang Lerche, Bernd Edenhofer, Michael Lohrmann
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Apr 28, 2000
Inventors
Wolfgang Lerche
Bernd Edenhofer
Michael Lohrmann
Assignee (at issue)
Ipsen International, 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.