Granted Patent
Utility
US 4,855,376 · App. 06/933,425
Side chain liquid crystalline polymers exhibiting nonlinear optical properties
Inventors:
Ronald N. De Martino, Hyun-Nam Yoon, James B. Stamatoff
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: Nov 21, 1986
Inventors
Ronald N. De Martino
Hyun-Nam Yoon
James B. Stamatoff
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.