Granted Patent
Utility
US 4,675,361 · App. 06/507,517
Polymer systems suitable for blood-contacting surfaces of a biomedical device, and methods for forming
Inventor:
Robert S. Ward
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Jun 24, 1983
Inventor
Robert S. Ward
Assignee (at issue)
Thoratec Laboratories 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.