Granted Patent
Utility
US 5,241,012 · App. 07/051,917
Activated and conjugated polystyrene substrate
Inventor:
Brian R. Clark
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: May 19, 1987
Inventor
Brian R. Clark
Assignee (at issue)
Applied Immune Sciences, Inc.
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.