Granted Patent
Utility
US 5,189,077 · App. 07/737,183
Reinforcing glass ionomer dental filling material with titanium stainless steel, or metals thereof
Inventor:
Ronald E. Kerby
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Jul 29, 1991
Inventor
Ronald E. Kerby
Assignee (at issue)
OHIO STATE UNIVERSITY
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.