Granted Patent
Utility
US 5,720,969 · App. 08/535,213
Membrane formed by an acrylonitrile-based polymer
Inventors:
Frank T. Gentile, Molly S. Shoichet, Milton Harris
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Jan 16, 1996
Inventors
Frank T. Gentile
Molly S. Shoichet
Milton Harris
Assignee (at issue)
Cytotherapeutics, 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.