Granted Patent
Utility
US 5,238,817 · App. 07/729,378
Chromogenic substrates for improving detection in a peroxidase-based assay
Inventors:
Mark Norman Bobrow, Gerald J. Litt
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Jul 12, 1991
Inventors
Mark Norman Bobrow
Gerald J. Litt
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.