Granted Patent
Utility
US 5,214,006 · App. 07/821,507
Cement-free silicon carbide monoliths
Inventor:
Mark C. Langenohl
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Jan 15, 1992
Inventor
Mark C. Langenohl
Assignee (at issue)
Indresco 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.