Granted Patent
Utility
US 4,984,040 · App. 07/366,822
High voltage thin film transistor with second gate
Inventor:
Peng K. Yap
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Jun 15, 1989
Inventor
Peng K. Yap
Assignee (at issue)
Xerox 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.