Granted Patent
Utility
US 4,145,407 · App. 05/835,481
Labeled 5,5-diphenylhydantoin derivatives for radioimmunoassay
Inventors:
George Henry Parsons, Thomas Eller
Patented Case
View Patent ↗
Granted: Mar 20, 1979
Filed: Sep 22, 1977
Inventors
George Henry Parsons
Thomas Eller
Assignee (at issue)
Baxter Travenol Laboratories, Inc.
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.