Granted Patent
Utility
US 6,477,066 · App. 09/822,741
Method and apparatus for reducing audible acoustical noise in a power supply transformer by shaping the waveform of a primary side inductor current
Inventor:
Francois L'Hermite
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Apr 2, 2001
Inventor
Francois L'Hermite
Assignee (at issue)
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
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.