Granted Patent
Utility
US 6,183,497 · App. 09/335,452
Absorbable sponge with contrasting agent
Inventors:
Eduardo Chi Sing, Mark Ashby
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Jun 17, 1999
Inventors
Eduardo Chi Sing
Mark Ashby
Assignee (at issue)
Sub-Q, 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.