Granted Patent
Utility
US 4,485,227 · App. 06/505,130
Biocompatible poly-(ether-urethane-urea) and process for its preparation
Inventor:
Adrian S. Fox
Patented Case
View Patent ↗
Granted: Nov 27, 1984
Filed: Jun 16, 1983
Inventor
Adrian S. Fox
Assignee (at issue)
Howmedica 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.