Granted Patent
Utility
US 6,048,620 · App. 08/929,948
Hydrophilic coating and substrates, particularly medical devices, provided with such a coating
Inventor:
Sheng Zhong
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Sep 15, 1997
Inventor
Sheng Zhong
Assignee (at issue)
Meadox Medicals, 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.