Granted Patent
Utility
US 5,266,533 · App. 07/863,481
Black glass ceramic from rapid pyrolysis in oxygen-containing atmospheres
Inventors:
Roger Leung, John G. Sikonia, Stephen T. Gonczy
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Apr 2, 1992
Inventors
Roger Leung
John G. Sikonia
Stephen T. Gonczy
Assignee (at issue)
AlliedSignal, 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.