Granted Patent
Utility
US 5,661,646 · App. 08/723,158
Multi-phase DC-DC chopper with different number of phases
Inventors:
Xianrui Huang, Minfeng Xu, Paulo RIBEIRO
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Sep 25, 1996
Inventors
Xianrui Huang
Minfeng Xu
Paulo RIBEIRO
Assignee (at issue)
The Babcock & Wilcox Company
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.