Granted Patent
Utility
US 5,409,744 · App. 08/122,378
Polymer dispersed liquid crystal optical devices
Inventors:
Tomohisa Gotoh, Hideya Murai, Taisaku Nakata
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Sep 16, 1993
Inventors
Tomohisa Gotoh
Hideya Murai
Taisaku Nakata
Assignee (at issue)
NEC 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.