Granted Patent
Utility
US 4,643,892 · App. 06/811,082
Magnesium trisilicate suitable for preparation of medicament adsorbates of analgesics
Inventors:
David W. Peters, John Denick, Jr., Anil K. Talwar
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Dec 19, 1985
Inventors
David W. Peters
John Denick, Jr.
Anil K. Talwar
Assignee (at issue)
WARNER-LAMBERT COMPANY LLC
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.