Granted Patent
Utility
US 4,260,681 · App. 05/973,851
Reagent system and method for assaying peptidase enzymes
Inventor:
John K. Pollard, Jr.
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Dec 28, 1978
Inventor
John K. Pollard, Jr.
Assignee (at issue)
Calbiochem-Behring Corp.
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.