Granted Patent
Utility
US 6,147,664 · App. 09/164,402
Controlling the brightness of an FED device using PWM on the row side and AM on the column side
Inventor:
Ronald L. Hansen
Patented Case
View Patent ↗
Granted: Nov 14, 2000
Filed: Sep 30, 1998
Inventor
Ronald L. Hansen
Assignee (at issue)
Candescent Technologies 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.