Granted Patent
Utility
US 5,770,769 · App. 08/768,624
Process for the preparation of D,L-methionine or the salt thereof
Inventors:
Friedhelm Geiger, Baudouin Halsberghe, Hans Joachim Hasselbach, Klaus Hentschel, Klaus Huthmacher, Martin Körfer, Sven-Peter Mannsfeld, Herbert Tanner, Ferdinand Theissen, Jose Vanrobaeys, Klaus Willigerodt
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Dec 18, 1996
Inventors
Friedhelm Geiger
Baudouin Halsberghe
Hans Joachim Hasselbach
Klaus Hentschel
Klaus Huthmacher
Martin Körfer
Sven-Peter Mannsfeld
Herbert Tanner
Ferdinand Theissen
Jose Vanrobaeys
Klaus Willigerodt
Assignee (at issue)
Degussa 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.