Granted Patent
Utility
US 4,886,794 · App. 07/202,028
4-[(.alpha.,.alpha.-diaryl)-hydroxymethyl]-1-piperidinylalkyl-cyclic carbamate derivatives as allergic response inhibitors
Inventor:
David A. Walsh
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Jun 3, 1988
Inventor
David A. Walsh
Assignee (at issue)
A. H. Robins Company, Incorporated
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.