Granted Patent
Utility
US 6,710,093 · App. 10/226,235
Immobilized ion exchange materials and processes for making the same
Inventors:
Li-Ho Yao, George Greene, Michael Arthur
Patented Case
View Patent ↗
Granted: Mar 23, 2004
Filed: Aug 23, 2002
Inventors
Li-Ho Yao
George Greene
Michael Arthur
Assignee (at issue)
Porex 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.