Granted Patent
Utility
US 5,167,886 · App. 07/752,112
Hot pressing densification aid for alumina
Inventors:
Craig P. Cameron, Roy W. Rice
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Aug 29, 1991
Inventors
Craig P. Cameron
Roy W. Rice
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.