Granted Patent
Utility
US 6,181,093 · App. 09/376,034
Commutation circuit for a sensorless three-phase brushless direct curent motor
Inventors:
Shi Hong Park, Yun-Kee Lee
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Aug 17, 1999
Inventors
Shi Hong Park
Yun-Kee Lee
Assignee (at issue)
Fairchild Korea Semiconductor 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.