Granted Patent
Utility
US 5,744,412 · App. 08/644,440
Composition and process for making an insulating refractory material
Inventors:
Alan Pearson, Thomas G. Swansiger
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: May 13, 1996
Inventors
Alan Pearson
Thomas G. Swansiger
Assignee (at issue)
Aluminum Company of America
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.