Granted Patent
Utility
US 5,000,774 · App. 07/420,040
Method of masked two stage lithium niobate proton exchange
Inventors:
Mauro Varasi, Carlo Misiano, Antonello Vannucci
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Oct 11, 1989
Inventors
Mauro Varasi
Carlo Misiano
Antonello Vannucci
Assignee (at issue)
Selenia Industrie Elettroniche Associate S.p.A.
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.