Granted Patent
Utility
US 5,137,804 · App. 07/192,087
Assay device and immunoassay
Inventors:
Richard A. Greene, Patricia Ann Kasila
Patented Case
View Patent ↗
Granted: Aug 11, 1992
Filed: May 10, 1988
Inventors
Richard A. Greene
Patricia Ann Kasila
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.