Granted Patent
Utility
US 6,225,491 · App. 09/467,157
Method for preparing certain acetonitriles
Inventor:
Ann Marie Diederich
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: Dec 20, 1999
Inventor
Ann Marie Diederich
Assignee (at issue)
SmithKline Beecham Limited
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.