Granted Patent
Utility
US 4,605,550 · App. 06/617,576
Delayed release formulations and processes for making them
Inventor:
Anthony J. Trill
Patented Case
View Patent ↗
Granted: Aug 12, 1986
Filed: Jun 5, 1984
Inventor
Anthony J. Trill
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.