Granted Patent
Utility
US 4,229,536 · App. 05/974,198
Process for preparing immobilized enzymes
Inventor:
Louis J. DeFilippi
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: Dec 28, 1978
Inventor
Louis J. DeFilippi
Assignee (at issue)
UOP LLC
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.