Granted Patent
Utility
US 6,498,679 · App. 09/745,885
Micro-retarder plate
Inventors:
Kuen Lee, Chao-Hsu Tsai
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Dec 21, 2000
Inventors
Kuen Lee
Chao-Hsu Tsai
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.