Granted Patent
Utility
US 6,181,113 · App. 09/363,426
Harmonic resonance control and protection system for switched power factor control capacitor devices
Inventors:
Yi Hu, Le Tang, Harry G. Mathews, Richard E. Tyner
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Jul 29, 1999
Inventors
Yi Hu
Le Tang
Harry G. Mathews
Richard E. Tyner
Assignee (at issue)
ABB Power T&D Company 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.