Granted Patent
Utility
US 4,717,508 · App. 06/771,864
Organic nonlinear optical substrates
Inventor:
Ronald N. DeMartino
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Sep 3, 1985
Inventor
Ronald N. DeMartino
Assignee (at issue)
Hoechst Celanese Corporation
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.