Granted Patent
Utility
US 6,723,121 · App. 09/671,418
Polycarbonate-polyurethane dispersions for thrombo-resistant coatings
Inventor:
Sheng Zhong
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Sep 27, 2000
Inventor
Sheng Zhong
Assignee (at issue)
Scimed Life Systems, 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.