Granted Patent
Utility
US 6,146,771 · App. 08/886,720
Process for modifying surfaces using the reaction product of a water-insoluble polymer and a polyalkylene imine
Inventors:
David F. Wirt, Larry M. Sirvio
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Jul 1, 1997
Inventors
David F. Wirt
Larry M. Sirvio
Assignee (at issue)
Terumo Cardiovascular Systems Corporation
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.