Granted Patent
Utility
US 5,877,263 · App. 08/755,189
Process for preparing polymer coatings grafted with polyethylene oxide chains containing covalently bonded bio-active agents
Inventors:
Birendra K. Patnaik, Richard J. Zdrahala
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Nov 25, 1996
Inventors
Birendra K. Patnaik
Richard J. Zdrahala
Assignee (at issue)
Meadox Medicals, 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.