Granted Patent
Utility
US 6,684,936 · App. 10/120,203
Erosion-resistant cold-box foundry binder systems
Inventors:
Wayne D. Woodson, James J. Archibald, H. Randall Shriver
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Apr 10, 2002
Inventors
Wayne D. Woodson
James J. Archibald
H. Randall Shriver
Assignee (at issue)
Ashland, 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.