Granted Patent
Utility
US 6,800,717 · App. 10/062,924
Acid catalyzed copolymerization of water and epoxy resin and uses thereof
Inventors:
Frederick Herbert Walker, John B. Dickenson
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Jan 31, 2002
Inventors
Frederick Herbert Walker
John B. Dickenson
Assignee (at issue)
Air Products and Chemicals, 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.