Granted Patent
Utility
US 4,798,804 · App. 07/010,934
Serum pretreatment in digoxin immunoassay
Inventors:
Pyare Khanna, Fred Pearlman
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Feb 5, 1987
Inventors
Pyare Khanna
Fred Pearlman
Assignee (at issue)
Syntex (U.S.A.) 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.