Granted Patent
Utility
US 6,689,898 · App. 10/104,783
Antihistaminic piperidine derivatives and intermediates for the preparation thereof
Inventor:
Timothy A. Ayers
Patented Case
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Granted: Feb 10, 2004
Filed: Mar 22, 2002
Inventor
Timothy A. Ayers
Assignee (at issue)
Aventis Pharmaceuticals Inc.
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.