Granted Patent
Utility
US 6,567,283 · App. 10/118,618
Enhanced conduction angle power factor correction topology
Inventor:
Richard Shaun Welches
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Apr 1, 2002
Inventor
Richard Shaun Welches
Assignee (at issue)
Youtility, Inc.
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.