Granted Patent
Utility
US 4,767,850 · App. 06/868,403
Process for the purification of acarbose with polymers
Inventors:
Peter M. Lange, Erich Rauenbusch
Patented Case
View Patent ↗
Granted: Aug 30, 1988
Filed: May 29, 1986
Inventors
Peter M. Lange
Erich Rauenbusch
Assignee (at issue)
Bayer Aktiengesellschaft
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.