Granted Patent
Utility
US 4,657,900 · App. 06/717,062
Pharmaceutical article of manufacture comprising a bisulfite stabilized aqueous solution of 5-aminosalicylic acid and method
Inventors:
David R. Powell, Vithal K. Patel
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Mar 28, 1985
Inventors
David R. Powell
Vithal K. Patel
Assignee (at issue)
Rowell Laboratories
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.