Granted Patent
Utility
US 5,743,980 · App. 08/642,107
Method of fabricating an optical retardation film
Inventors:
Ting-Chiang Hsieh, Dong-Yuan Goang, Ren-Long Chu
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: May 2, 1996
Inventors
Ting-Chiang Hsieh
Dong-Yuan Goang
Ren-Long Chu
Assignee (at issue)
Industrial Technology Research Institute
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.