Granted Patent
Utility
US 5,172,255 · App. 07/871,574
Process for increasing pretilt angles in nematic liquid crystal cells
Inventors:
Stefan Brosig, Hansjorg Wirsig
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Apr 20, 1992
Inventors
Stefan Brosig
Hansjorg Wirsig
Assignee (at issue)
Nokia (Unterhaltungselektronik/(Deutschland) GmbH
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.