Granted Patent
Utility
US 6,603,795 · App. 09/778,835
Power control system for AC electric arc furnace
Inventors:
Thomas Lai Wai Ma, Mohammad Sedighy, Brian K. Perkins, Theodorus Anthonius Gerritsen, Janos Rajda
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Feb 8, 2001
Inventors
Thomas Lai Wai Ma
Mohammad Sedighy
Brian K. Perkins
Theodorus Anthonius Gerritsen
Janos Rajda
Assignees (at issue)
Hatch Ltd.
Satcon Power Systems Canada Ltd.
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.