Granted Patent
Utility
US 5,734,249 · App. 08/812,314
Method and apparatus for direct torque control of a three-phase machine
Inventors:
Pasi Pohjalainen, Christian Stulz
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Mar 5, 1997
Inventors
Pasi Pohjalainen
Christian Stulz
Assignee (at issue)
Asea Brown Boveri, S.A.
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.