Granted Patent
Utility
US 6,008,593 · App. 09/022,554
Closed-loop/dimming ballast controller integrated circuits
Inventor:
Thomas Ribarich
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Feb 12, 1998
Inventor
Thomas Ribarich
Assignee (at issue)
International Rectifier Corporation
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.