Granted Patent
Utility
US 4,291,133 · App. 06/027,366
Nonthrombogenic polymer surface
Inventors:
Vaclav Horak, Jiri Janata
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Apr 5, 1979
Inventors
Vaclav Horak
Jiri Janata
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.