Granted Patent
Utility
US 5,872,372 · App. 08/712,410
Thin film transistor with piezoelectric film
Inventors:
Seong-Jae Lee, Kyoung Wan Park, Min Cheol Shin
Patented Case
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Granted: Feb 16, 1999
Filed: Sep 11, 1996
Inventors
Seong-Jae Lee
Kyoung Wan Park
Min Cheol Shin
Assignee (at issue)
ELECTRONICS AND TELECOMMUNICATIONS 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.