Granted Patent
Utility
US 4,481,009 · App. 06/377,747
Polymer incorporation into implantable biological tissue to inhibit calcification
Inventor:
Aws S. Nashef
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: May 13, 1982
Inventor
Aws S. Nashef
Assignee (at issue)
American Hospital Supply 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.