Granted Patent
Utility
US 6,559,082 · App. 10/129,993
Insulating refractory material
Inventors:
Cecile Desvignes, Gilbert Rancoule
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Jul 30, 2002
Inventors
Cecile Desvignes
Gilbert Rancoule
Assignee (at issue)
VESUVIUS CRUCIBLE 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.