Granted Patent
Utility
US 5,401,437 · App. 08/113,458
Polymer dispersed liquid crystal for wide viewing angle
Inventor:
Seoung-jae Im
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Aug 27, 1993
Inventor
Seoung-jae Im
Assignee (at issue)
Samsung Electron Devices Co., 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.