Granted Patent
Utility
US 6,770,699 · App. 09/940,816
Investment casting binders for making molds having high green strength and low fired strength
Inventors:
Ronald S. Doles, Gretchen L. Desch
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Aug 27, 2001
Inventors
Ronald S. Doles
Gretchen L. Desch
Assignee (at issue)
Nalco Company LLC
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.