Granted Patent
Utility
US 6,448,950 · App. 09/504,472
Energy efficient resonant switching electroluminescent display driver
Inventor:
Chun-Fai Cheng
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Feb 16, 2000
Inventor
Chun-Fai Cheng
Assignee (at issue)
Ifire Technology Corp.
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.