Granted Patent
Utility
US 4,496,503 · App. 06/527,911
Method of making a densified silicon nitride/oxynitride composite
Inventors:
Andre Ezis, Elaine C. Beckwith, Howard D. Blair
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Jul 19, 1983
Inventors
Andre Ezis
Elaine C. Beckwith
Howard D. Blair
Assignee (at issue)
Ford Motor 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.