Granted Patent
Utility
US 5,024,784 · App. 07/071,192
Device for reversible optical data storage using polymeric liquid crystals
Inventors:
Manfred Eich, Joachim H. Wendorff
Patented Case
View Patent ↗
Granted: Jun 18, 1991
Filed: Jul 8, 1987
Inventors
Manfred Eich
Joachim H. Wendorff
Assignee (at issue)
Rohm GmbH Chemische Fabrik
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.