Granted Patent
Utility
US 4,702,760 · App. 06/787,601
Method for strengthening glass articles through electrostatic ionic interchange
Inventor:
Jose L. Garcia de Leon
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Oct 15, 1985
Inventor
Jose L. Garcia de Leon
Assignee (at issue)
Vitro Tec Fideicomiso
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.