Granted Patent
Utility
US 5,362,627 · App. 07/242,598
Stabilization and reduction of background fluorescence of hydroxy coumarin ester enzyme substrates
Inventors:
Richard A. Blumenthal, Hon-Peng P. Lau, Esther K. Yang
Patented Case
View Patent ↗
Granted: Nov 8, 1994
Filed: Sep 12, 1988
Inventors
Richard A. Blumenthal
Hon-Peng P. Lau
Esther K. Yang
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.