Granted Patent
Utility
US 4,434,096 · App. 06/279,161
Substrates for the quantitative determination of proteolytic enzymes
Inventors:
Patrick L. Coleman, John A. Wehrly
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Jun 30, 1981
Inventors
Patrick L. Coleman
John A. Wehrly
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.