Granted Patent
Utility
US 5,672,745 · App. 08/416,900
Method for the continuous preparation of methionine or methionine derivatives
Inventors:
Hans-Albrecht Hasseberg, Klaus Huthmacher, Stephan Rautenberg, Heinrich Petsch, Horst Weigel
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: May 23, 1995
Inventors
Hans-Albrecht Hasseberg
Klaus Huthmacher
Stephan Rautenberg
Heinrich Petsch
Horst Weigel
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.