Granted Patent
Utility
US 5,769,780 · App. 08/948,365
Method of manufacturing natural tissue valves having variably compliant leaflets
Inventors:
Cary Hata, Roger Tu, Hsing-Wen Sung, Shih-Hwa Shen
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Oct 9, 1997
Inventors
Cary Hata
Roger Tu
Hsing-Wen Sung
Shih-Hwa Shen
Assignee (at issue)
Baxter International 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.