Granted Patent
Utility
US 6,597,159 · App. 09/931,641
Pulse width modulation controller having frequency modulation for power converter
Inventor:
Ta-Yung Yang
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Aug 15, 2001
Inventor
Ta-Yung Yang
Assignee (at issue)
System General 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.