Granted Patent
Utility
US 4,260,769 · App. 06/033,234
5,5-Diphenylhydantoins
Inventors:
Valentino J. Stella, Kenneth B. Sloan
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Apr 25, 1979
Inventors
Valentino J. Stella
Kenneth B. Sloan
Assignee (at issue)
INTERx Research Corporation
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.