Granted Patent
Utility
US 4,451,577 · App. 06/261,319
Catalyst composition and method for curing furan-based foundry binders
Inventor:
William W. Coss
Patented Case
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Granted: May 29, 1984
Filed: May 6, 1981
Inventor
William W. Coss
Assignee (at issue)
The Quaker Oats Company
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.