Granted Patent
Utility
US 6,380,997 · App. 09/466,053
Achromatic polarization inverters for displaying inverse frames in DC balanced liquid crystal displays
Inventors:
Gary D. Sharp, Kristina M. Johnson, Michael G. Robinson, Jianmin Chen
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Dec 17, 1999
Inventors
Gary D. Sharp
Kristina M. Johnson
Michael G. Robinson
Jianmin Chen
Assignee (at issue)
COLOR INK, INC.
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.