Granted Patent
Utility
US 5,120,681 · App. 07/704,497
Ceramic composites containing spinel, silicon carbide, and boron carbide
Inventor:
Craig P. Cameron
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: May 23, 1991
Inventor
Craig P. Cameron
Assignee (at issue)
W.R. Grace & Co. Conn.
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.