Granted Patent
Utility
US 5,589,966 · App. 08/237,120
Antiferroelectric liquid crystal light modulation device
Inventors:
Hideo Hama, Yukari Sakai
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: May 3, 1994
Inventors
Hideo Hama
Yukari Sakai
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.