Granted Patent
Utility
US 6,411,067 · App. 09/785,168
Voltage source converters operating either as back-to-back stations or as parallel static var compensators
Inventor:
Hans Björklund
Patented Case
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Granted: Jun 25, 2002
Filed: Feb 20, 2001
Inventor
Hans Björklund
Assignee (at issue)
ABB AB
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.