Granted Patent
Utility
US 5,552,977 · App. 08/493,221
Three phase inverter circuit with improved transition from SVPWM to six step operation
Inventors:
Xingyi Xu, Doug D. Deng
Patented Case
View Patent ↗
Granted: Sep 3, 1996
Filed: Jun 20, 1995
Inventors
Xingyi Xu
Doug D. Deng
Assignee (at issue)
Ford Motor 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.