Granted Patent
Utility
US 4,666,776 · App. 06/786,263
Polymers for the purification of acarbose
Inventors:
Peter M. Lange, Erich Rauenbusch
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Oct 10, 1985
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.