Granted Patent
Utility
US 5,976,609 · App. 08/776,217
Process for recovering 2-hydroxy-4-methylthiobutyric acid (MHA), MHA and its use
Inventors:
Hans-Albrecht Hasseberg, Klaus Huthmacher, Herbert Tanner, Volker Hafner, Harald Heinzel
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Jan 13, 1997
Inventors
Hans-Albrecht Hasseberg
Klaus Huthmacher
Herbert Tanner
Volker Hafner
Harald Heinzel
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.