Granted Patent
Utility
US 5,418,389 · App. 08/149,554
Field-effect transistor with perovskite oxide channel
Inventor:
Yukio Watanabe
Patented Case
View Patent ↗
Granted: May 23, 1995
Filed: Nov 9, 1993
Inventor
Yukio Watanabe
Assignee (at issue)
MITSUBISHI CHEMICAL 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.