Granted Patent
Utility
US 4,882,330 · App. 07/333,673
1-aryloxy-4-[((4-aryl)-1-piperazinyl]-2-butanols useful as antiallergy agents
Inventors:
David A. Walsh, John M. Yanni
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Apr 6, 1989
Inventors
David A. Walsh
John M. Yanni
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.