Granted Patent
Utility
US 5,885,809 · App. 08/796,873
Method of producing (S)-cyanohydrins
Inventors:
Franz Effenberger, Harald Wajant, Siegfried Forster, Jürgen Roos
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Feb 7, 1997
Inventors
Franz Effenberger
Harald Wajant
Siegfried Forster
Jürgen Roos
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.