Granted Patent
Utility
US 4,547,358 · App. 06/616,982
Sustained release tablet containing at least 95 percent theophylline
Inventors:
Stephen T. David, Dana Brooke, Claude E. Gallian
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Jun 4, 1984
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.