Granted Patent
Utility
US 6,429,328 · App. 09/897,664
Processes and intermediate compounds for preparing guanidine and amidine derivatives
Inventors:
Sven Luettke, Andreas Mathes
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jul 2, 2001
Inventors
Sven Luettke
Andreas Mathes
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.