Granted Patent
Utility
US 4,511,666 · App. 06/450,337
Process for producing beta'-silicon aluminum oxynitride (B'-SiAlON)
Inventors:
Frankie E. Phelps, Paul J. Boget, Robert L. Troup
Patented Case
View Patent ↗
Granted: Apr 16, 1985
Filed: Dec 16, 1982
Inventors
Frankie E. Phelps
Paul J. Boget
Robert L. Troup
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.