Granted Patent
Utility
US 6,608,055 · App. 10/167,198
Crystalline anticholinergic, processes for preparing it and its use for preparing a pharmaceutical composition
Inventors:
Peter Sieger, Ulrike Werthmann
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Jun 11, 2002
Inventors
Peter Sieger
Ulrike Werthmann
Assignee (at issue)
BOEHRINGER INGELHEIM PHARMA GMBH & CO. KG
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.