Granted Patent
Utility
US 6,551,608 · App. 09/519,595
Porous plastic media with antiviral or antimicrobial properties and processes for making the same
Inventor:
Li-Ho Yao
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Mar 6, 2000
Inventor
Li-Ho Yao
Assignee (at issue)
Porex Technologies 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.