Granted Patent
Utility
US 4,725,620 · App. 06/905,822
2H-pyran-2,6-(3H)-dione derivatives with anti-allergic activity
Inventors:
Michael E. Garst, Charles Gluchowski, Lester J. Kaplan
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Sep 10, 1986
Inventors
Michael E. Garst
Charles Gluchowski
Lester J. Kaplan
Assignee (at issue)
Allergan, 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.