Granted Patent
Utility
US 4,465,660 · App. 06/451,891
Sustained release tablet containing at least 95 percent theophylline
Inventors:
Stephen T. David, Dana Brooke, Claude E. Gallian
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Dec 21, 1982
Inventors
Stephen T. David
Dana Brooke
Claude E. Gallian
Assignee (at issue)
Mead Johnson & Co.
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.