Granted Patent
Utility
US 6,562,601 · App. 09/935,758
Fermentation process for the preparation of L-threonine
Inventors:
Thomas Hermann, Mechthild Rieping
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Aug 24, 2001
Inventors
Thomas Hermann
Mechthild Rieping
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.