Granted Patent
Utility
US 4,999,284 · App. 07/178,366
Enzymatically amplified piezoelectric specific binding assay
Inventors:
Michael D. Ward, Richard C. Ebersole
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Apr 6, 1988
Inventors
Michael D. Ward
Richard C. Ebersole
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.